net/mac80211/cfg.c

   1 /*
   2  * mac80211 configuration hooks for cfg80211
   3  *
   4  * Copyright 2006-2010  Johannes Berg <[email protected]>
   5  * Copyright 2013-2015  Intel Mobile Communications GmbH
   6  *
   7  * This file is GPLv2 as found in COPYING.
   8  */
   9
  10 #include <linux/ieee80211.h>
  11 #include <linux/nl80211.h>
  12 #include <linux/rtnetlink.h>
  13 #include <linux/slab.h>
  14 #include <net/net_namespace.h>
  15 #include <linux/rcupdate.h>
  16 #include <linux/if_ether.h>
  17 #include <net/cfg80211.h>
  18 #include "ieee80211_i.h"
  19 #include "driver-ops.h"
  20 #include "rate.h"
  21 #include "mesh.h"
  22 #include "wme.h"
  23
  24 static struct wireless_dev *ieee80211_add_iface(struct wiphy *wiphy,
  25                                                 const char *name,
  26                                                 unsigned char name_assign_type,
  27                                                 enum nl80211_iftype type,
  28                                                 u32 *flags,
  29                                                 struct vif_params *params)
  30 {
  31         struct ieee80211_local *local = wiphy_priv(wiphy);
  32         struct wireless_dev *wdev;
  33         struct ieee80211_sub_if_data *sdata;
  34         int err;
  35
  36         err = ieee80211_if_add(local, name, name_assign_type, &wdev, type, params);
  37         if (err)
  38                 return ERR_PTR(err);
  39
  40         if (type == NL80211_IFTYPE_MONITOR && flags) {
  41                 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
  42                 sdata->u.mntr_flags = *flags;
  43         }
  44
  45         return wdev;
  46 }
  47
  48 static int ieee80211_del_iface(struct wiphy *wiphy, struct wireless_dev *wdev)
  49 {
  50         ieee80211_if_remove(IEEE80211_WDEV_TO_SUB_IF(wdev));
  51
  52         return 0;
  53 }
  54
  55 static int ieee80211_change_iface(struct wiphy *wiphy,
  56                                   struct net_device *dev,
  57                                   enum nl80211_iftype type, u32 *flags,
  58                                   struct vif_params *params)
  59 {
  60         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
  61         int ret;
  62
  63         ret = ieee80211_if_change_type(sdata, type);
  64         if (ret)
  65                 return ret;
  66
  67         if (type == NL80211_IFTYPE_AP_VLAN &&
  68             params && params->use_4addr == 0) {
  69                 RCU_INIT_POINTER(sdata->u.vlan.sta, NULL);
  70                 ieee80211_check_fast_rx_iface(sdata);
  71         } else if (type == NL80211_IFTYPE_STATION &&
  72                    params && params->use_4addr >= 0) {
  73                 sdata->u.mgd.use_4addr = params->use_4addr;
  74         }
  75
  76         if (sdata->vif.type == NL80211_IFTYPE_MONITOR && flags) {
  77                 struct ieee80211_local *local = sdata->local;
  78
  79                 if (ieee80211_sdata_running(sdata)) {
  80                         u32 mask = MONITOR_FLAG_COOK_FRAMES |
  81                                    MONITOR_FLAG_ACTIVE;
  82
  83                         /*
  84                          * Prohibit MONITOR_FLAG_COOK_FRAMES and
  85                          * MONITOR_FLAG_ACTIVE to be changed while the
  86                          * interface is up.
  87                          * Else we would need to add a lot of cruft
  88                          * to update everything:
  89                          *      cooked_mntrs, monitor and all fif_* counters
  90                          *      reconfigure hardware
  91                          */
  92                         if ((*flags & mask) != (sdata->u.mntr_flags & mask))
  93                                 return -EBUSY;
  94
  95                         ieee80211_adjust_monitor_flags(sdata, -1);
  96                         sdata->u.mntr_flags = *flags;
  97                         ieee80211_adjust_monitor_flags(sdata, 1);
  98
  99                         ieee80211_configure_filter(local);
 100                 } else {
 101                         /*
 102                          * Because the interface is down, ieee80211_do_stop
 103                          * and ieee80211_do_open take care of "everything"
 104                          * mentioned in the comment above.
 105                          */
 106                         sdata->u.mntr_flags = *flags;
 107                 }
 108         }
 109
 110         return 0;
 111 }
 112
 113 static int ieee80211_start_p2p_device(struct wiphy *wiphy,
 114                                       struct wireless_dev *wdev)
 115 {
 116         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
 117         int ret;
 118
 119         mutex_lock(&sdata->local->chanctx_mtx);
 120         ret = ieee80211_check_combinations(sdata, NULL, 0, 0);
 121         mutex_unlock(&sdata->local->chanctx_mtx);
 122         if (ret < 0)
 123                 return ret;
 124
 125         return ieee80211_do_open(wdev, true);
 126 }
 127
 128 static void ieee80211_stop_p2p_device(struct wiphy *wiphy,
 129                                       struct wireless_dev *wdev)
 130 {
 131         ieee80211_sdata_stop(IEEE80211_WDEV_TO_SUB_IF(wdev));
 132 }
 133
 134 static int ieee80211_set_noack_map(struct wiphy *wiphy,
 135                                   struct net_device *dev,
 136                                   u16 noack_map)
 137 {
 138         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 139
 140         sdata->noack_map = noack_map;
 141
 142         ieee80211_check_fast_xmit_iface(sdata);
 143
 144         return 0;
 145 }
 146
 147 static int ieee80211_add_key(struct wiphy *wiphy, struct net_device *dev,
 148                              u8 key_idx, bool pairwise, const u8 *mac_addr,
 149                              struct key_params *params)
 150 {
 151         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 152         struct ieee80211_local *local = sdata->local;
 153         struct sta_info *sta = NULL;
 154         const struct ieee80211_cipher_scheme *cs = NULL;
 155         struct ieee80211_key *key;
 156         int err;
 157
 158         if (!ieee80211_sdata_running(sdata))
 159                 return -ENETDOWN;
 160
 161         /* reject WEP and TKIP keys if WEP failed to initialize */
 162         switch (params->cipher) {
 163         case WLAN_CIPHER_SUITE_WEP40:
 164         case WLAN_CIPHER_SUITE_TKIP:
 165         case WLAN_CIPHER_SUITE_WEP104:
 166                 if (IS_ERR(local->wep_tx_tfm))
 167                         return -EINVAL;
 168                 break;
 169         case WLAN_CIPHER_SUITE_CCMP:
 170         case WLAN_CIPHER_SUITE_CCMP_256:
 171         case WLAN_CIPHER_SUITE_AES_CMAC:
 172         case WLAN_CIPHER_SUITE_BIP_CMAC_256:
 173         case WLAN_CIPHER_SUITE_BIP_GMAC_128:
 174         case WLAN_CIPHER_SUITE_BIP_GMAC_256:
 175         case WLAN_CIPHER_SUITE_GCMP:
 176         case WLAN_CIPHER_SUITE_GCMP_256:
 177                 break;
 178         default:
 179                 cs = ieee80211_cs_get(local, params->cipher, sdata->vif.type);
 180                 break;
 181         }
 182
 183         key = ieee80211_key_alloc(params->cipher, key_idx, params->key_len,
 184                                   params->key, params->seq_len, params->seq,
 185                                   cs);
 186         if (IS_ERR(key))
 187                 return PTR_ERR(key);
 188
 189         if (pairwise)
 190                 key->conf.flags |= IEEE80211_KEY_FLAG_PAIRWISE;
 191
 192         mutex_lock(&local->sta_mtx);
 193
 194         if (mac_addr) {
 195                 if (ieee80211_vif_is_mesh(&sdata->vif))
 196                         sta = sta_info_get(sdata, mac_addr);
 197                 else
 198                         sta = sta_info_get_bss(sdata, mac_addr);
 199                 /*
 200                  * The ASSOC test makes sure the driver is ready to
 201                  * receive the key. When wpa_supplicant has roamed
 202                  * using FT, it attempts to set the key before
 203                  * association has completed, this rejects that attempt
 204                  * so it will set the key again after association.
 205                  *
 206                  * TODO: accept the key if we have a station entry and
 207                  *       add it to the device after the station.
 208                  */
 209                 if (!sta || !test_sta_flag(sta, WLAN_STA_ASSOC)) {
 210                         ieee80211_key_free_unused(key);
 211                         err = -ENOENT;
 212                         goto out_unlock;
 213                 }
 214         }
 215
 216         switch (sdata->vif.type) {
 217         case NL80211_IFTYPE_STATION:
 218                 if (sdata->u.mgd.mfp != IEEE80211_MFP_DISABLED)
 219                         key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
 220                 break;
 221         case NL80211_IFTYPE_AP:
 222         case NL80211_IFTYPE_AP_VLAN:
 223                 /* Keys without a station are used for TX only */
 224                 if (key->sta && test_sta_flag(key->sta, WLAN_STA_MFP))
 225                         key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
 226                 break;
 227         case NL80211_IFTYPE_ADHOC:
 228                 /* no MFP (yet) */
 229                 break;
 230         case NL80211_IFTYPE_MESH_POINT:
 231 #ifdef CONFIG_MAC80211_MESH
 232                 if (sdata->u.mesh.security != IEEE80211_MESH_SEC_NONE)
 233                         key->conf.flags |= IEEE80211_KEY_FLAG_RX_MGMT;
 234                 break;
 235 #endif
 236         case NL80211_IFTYPE_WDS:
 237         case NL80211_IFTYPE_MONITOR:
 238         case NL80211_IFTYPE_P2P_DEVICE:
 239         case NL80211_IFTYPE_UNSPECIFIED:
 240         case NUM_NL80211_IFTYPES:
 241         case NL80211_IFTYPE_P2P_CLIENT:
 242         case NL80211_IFTYPE_P2P_GO:
 243         case NL80211_IFTYPE_OCB:
 244                 /* shouldn't happen */
 245                 WARN_ON_ONCE(1);
 246                 break;
 247         }
 248
 249         if (sta)
 250                 sta->cipher_scheme = cs;
 251
 252         err = ieee80211_key_link(key, sdata, sta);
 253
 254  out_unlock:
 255         mutex_unlock(&local->sta_mtx);
 256
 257         return err;
 258 }
 259
 260 static int ieee80211_del_key(struct wiphy *wiphy, struct net_device *dev,
 261                              u8 key_idx, bool pairwise, const u8 *mac_addr)
 262 {
 263         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 264         struct ieee80211_local *local = sdata->local;
 265         struct sta_info *sta;
 266         struct ieee80211_key *key = NULL;
 267         int ret;
 268
 269         mutex_lock(&local->sta_mtx);
 270         mutex_lock(&local->key_mtx);
 271
 272         if (mac_addr) {
 273                 ret = -ENOENT;
 274
 275                 sta = sta_info_get_bss(sdata, mac_addr);
 276                 if (!sta)
 277                         goto out_unlock;
 278
 279                 if (pairwise)
 280                         key = key_mtx_dereference(local, sta->ptk[key_idx]);
 281                 else
 282                         key = key_mtx_dereference(local, sta->gtk[key_idx]);
 283         } else
 284                 key = key_mtx_dereference(local, sdata->keys[key_idx]);
 285
 286         if (!key) {
 287                 ret = -ENOENT;
 288                 goto out_unlock;
 289         }
 290
 291         ieee80211_key_free(key, true);
 292
 293         ret = 0;
 294  out_unlock:
 295         mutex_unlock(&local->key_mtx);
 296         mutex_unlock(&local->sta_mtx);
 297
 298         return ret;
 299 }
 300
 301 static int ieee80211_get_key(struct wiphy *wiphy, struct net_device *dev,
 302                              u8 key_idx, bool pairwise, const u8 *mac_addr,
 303                              void *cookie,
 304                              void (*callback)(void *cookie,
 305                                               struct key_params *params))
 306 {
 307         struct ieee80211_sub_if_data *sdata;
 308         struct sta_info *sta = NULL;
 309         u8 seq[6] = {0};
 310         struct key_params params;
 311         struct ieee80211_key *key = NULL;
 312         u64 pn64;
 313         u32 iv32;
 314         u16 iv16;
 315         int err = -ENOENT;
 316         struct ieee80211_key_seq kseq = {};
 317
 318         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 319
 320         rcu_read_lock();
 321
 322         if (mac_addr) {
 323                 sta = sta_info_get_bss(sdata, mac_addr);
 324                 if (!sta)
 325                         goto out;
 326
 327                 if (pairwise && key_idx < NUM_DEFAULT_KEYS)
 328                         key = rcu_dereference(sta->ptk[key_idx]);
 329                 else if (!pairwise &&
 330                          key_idx < NUM_DEFAULT_KEYS + NUM_DEFAULT_MGMT_KEYS)
 331                         key = rcu_dereference(sta->gtk[key_idx]);
 332         } else
 333                 key = rcu_dereference(sdata->keys[key_idx]);
 334
 335         if (!key)
 336                 goto out;
 337
 338         memset(&params, 0, sizeof(params));
 339
 340         params.cipher = key->conf.cipher;
 341
 342         switch (key->conf.cipher) {
 343         case WLAN_CIPHER_SUITE_TKIP:
 344                 pn64 = atomic64_read(&key->conf.tx_pn);
 345                 iv32 = TKIP_PN_TO_IV32(pn64);
 346                 iv16 = TKIP_PN_TO_IV16(pn64);
 347
 348                 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE &&
 349                     !(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) {
 350                         drv_get_key_seq(sdata->local, key, &kseq);
 351                         iv32 = kseq.tkip.iv32;
 352                         iv16 = kseq.tkip.iv16;
 353                 }
 354
 355                 seq[0] = iv16 & 0xff;
 356                 seq[1] = (iv16 >> 8) & 0xff;
 357                 seq[2] = iv32 & 0xff;
 358                 seq[3] = (iv32 >> 8) & 0xff;
 359                 seq[4] = (iv32 >> 16) & 0xff;
 360                 seq[5] = (iv32 >> 24) & 0xff;
 361                 params.seq = seq;
 362                 params.seq_len = 6;
 363                 break;
 364         case WLAN_CIPHER_SUITE_CCMP:
 365         case WLAN_CIPHER_SUITE_CCMP_256:
 366         case WLAN_CIPHER_SUITE_AES_CMAC:
 367         case WLAN_CIPHER_SUITE_BIP_CMAC_256:
 368                 BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) !=
 369                              offsetof(typeof(kseq), aes_cmac));
 370         case WLAN_CIPHER_SUITE_BIP_GMAC_128:
 371         case WLAN_CIPHER_SUITE_BIP_GMAC_256:
 372                 BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) !=
 373                              offsetof(typeof(kseq), aes_gmac));
 374         case WLAN_CIPHER_SUITE_GCMP:
 375         case WLAN_CIPHER_SUITE_GCMP_256:
 376                 BUILD_BUG_ON(offsetof(typeof(kseq), ccmp) !=
 377                              offsetof(typeof(kseq), gcmp));
 378
 379                 if (key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE &&
 380                     !(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV)) {
 381                         drv_get_key_seq(sdata->local, key, &kseq);
 382                         memcpy(seq, kseq.ccmp.pn, 6);
 383                 } else {
 384                         pn64 = atomic64_read(&key->conf.tx_pn);
 385                         seq[0] = pn64;
 386                         seq[1] = pn64 >> 8;
 387                         seq[2] = pn64 >> 16;
 388                         seq[3] = pn64 >> 24;
 389                         seq[4] = pn64 >> 32;
 390                         seq[5] = pn64 >> 40;
 391                 }
 392                 params.seq = seq;
 393                 params.seq_len = 6;
 394                 break;
 395         default:
 396                 if (!(key->flags & KEY_FLAG_UPLOADED_TO_HARDWARE))
 397                         break;
 398                 if (WARN_ON(key->conf.flags & IEEE80211_KEY_FLAG_GENERATE_IV))
 399                         break;
 400                 drv_get_key_seq(sdata->local, key, &kseq);
 401                 params.seq = kseq.hw.seq;
 402                 params.seq_len = kseq.hw.seq_len;
 403                 break;
 404         }
 405
 406         params.key = key->conf.key;
 407         params.key_len = key->conf.keylen;
 408
 409         callback(cookie, &params);
 410         err = 0;
 411
 412  out:
 413         rcu_read_unlock();
 414         return err;
 415 }
 416
 417 static int ieee80211_config_default_key(struct wiphy *wiphy,
 418                                         struct net_device *dev,
 419                                         u8 key_idx, bool uni,
 420                                         bool multi)
 421 {
 422         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 423
 424         ieee80211_set_default_key(sdata, key_idx, uni, multi);
 425
 426         return 0;
 427 }
 428
 429 static int ieee80211_config_default_mgmt_key(struct wiphy *wiphy,
 430                                              struct net_device *dev,
 431                                              u8 key_idx)
 432 {
 433         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 434
 435         ieee80211_set_default_mgmt_key(sdata, key_idx);
 436
 437         return 0;
 438 }
 439
 440 void sta_set_rate_info_tx(struct sta_info *sta,
 441                           const struct ieee80211_tx_rate *rate,
 442                           struct rate_info *rinfo)
 443 {
 444         rinfo->flags = 0;
 445         if (rate->flags & IEEE80211_TX_RC_MCS) {
 446                 rinfo->flags |= RATE_INFO_FLAGS_MCS;
 447                 rinfo->mcs = rate->idx;
 448         } else if (rate->flags & IEEE80211_TX_RC_VHT_MCS) {
 449                 rinfo->flags |= RATE_INFO_FLAGS_VHT_MCS;
 450                 rinfo->mcs = ieee80211_rate_get_vht_mcs(rate);
 451                 rinfo->nss = ieee80211_rate_get_vht_nss(rate);
 452         } else {
 453                 struct ieee80211_supported_band *sband;
 454                 int shift = ieee80211_vif_get_shift(&sta->sdata->vif);
 455                 u16 brate;
 456
 457                 sband = sta->local->hw.wiphy->bands[
 458                                 ieee80211_get_sdata_band(sta->sdata)];
 459                 brate = sband->bitrates[rate->idx].bitrate;
 460                 rinfo->legacy = DIV_ROUND_UP(brate, 1 << shift);
 461         }
 462         if (rate->flags & IEEE80211_TX_RC_40_MHZ_WIDTH)
 463                 rinfo->bw = RATE_INFO_BW_40;
 464         else if (rate->flags & IEEE80211_TX_RC_80_MHZ_WIDTH)
 465                 rinfo->bw = RATE_INFO_BW_80;
 466         else if (rate->flags & IEEE80211_TX_RC_160_MHZ_WIDTH)
 467                 rinfo->bw = RATE_INFO_BW_160;
 468         else
 469                 rinfo->bw = RATE_INFO_BW_20;
 470         if (rate->flags & IEEE80211_TX_RC_SHORT_GI)
 471                 rinfo->flags |= RATE_INFO_FLAGS_SHORT_GI;
 472 }
 473
 474 static int ieee80211_dump_station(struct wiphy *wiphy, struct net_device *dev,
 475                                   int idx, u8 *mac, struct station_info *sinfo)
 476 {
 477         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 478         struct ieee80211_local *local = sdata->local;
 479         struct sta_info *sta;
 480         int ret = -ENOENT;
 481
 482         mutex_lock(&local->sta_mtx);
 483
 484         sta = sta_info_get_by_idx(sdata, idx);
 485         if (sta) {
 486                 ret = 0;
 487                 memcpy(mac, sta->sta.addr, ETH_ALEN);
 488                 sta_set_sinfo(sta, sinfo);
 489         }
 490
 491         mutex_unlock(&local->sta_mtx);
 492
 493         return ret;
 494 }
 495
 496 static int ieee80211_dump_survey(struct wiphy *wiphy, struct net_device *dev,
 497                                  int idx, struct survey_info *survey)
 498 {
 499         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
 500
 501         return drv_get_survey(local, idx, survey);
 502 }
 503
 504 static int ieee80211_get_station(struct wiphy *wiphy, struct net_device *dev,
 505                                  const u8 *mac, struct station_info *sinfo)
 506 {
 507         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 508         struct ieee80211_local *local = sdata->local;
 509         struct sta_info *sta;
 510         int ret = -ENOENT;
 511
 512         mutex_lock(&local->sta_mtx);
 513
 514         sta = sta_info_get_bss(sdata, mac);
 515         if (sta) {
 516                 ret = 0;
 517                 sta_set_sinfo(sta, sinfo);
 518         }
 519
 520         mutex_unlock(&local->sta_mtx);
 521
 522         return ret;
 523 }
 524
 525 static int ieee80211_set_monitor_channel(struct wiphy *wiphy,
 526                                          struct cfg80211_chan_def *chandef)
 527 {
 528         struct ieee80211_local *local = wiphy_priv(wiphy);
 529         struct ieee80211_sub_if_data *sdata;
 530         int ret = 0;
 531
 532         if (cfg80211_chandef_identical(&local->monitor_chandef, chandef))
 533                 return 0;
 534
 535         mutex_lock(&local->mtx);
 536         mutex_lock(&local->iflist_mtx);
 537         if (local->use_chanctx) {
 538                 sdata = rcu_dereference_protected(
 539                                 local->monitor_sdata,
 540                                 lockdep_is_held(&local->iflist_mtx));
 541                 if (sdata) {
 542                         ieee80211_vif_release_channel(sdata);
 543                         ret = ieee80211_vif_use_channel(sdata, chandef,
 544                                         IEEE80211_CHANCTX_EXCLUSIVE);
 545                 }
 546         } else if (local->open_count == local->monitors) {
 547                 local->_oper_chandef = *chandef;
 548                 ieee80211_hw_config(local, 0);
 549         }
 550
 551         if (ret == 0)
 552                 local->monitor_chandef = *chandef;
 553         mutex_unlock(&local->iflist_mtx);
 554         mutex_unlock(&local->mtx);
 555
 556         return ret;
 557 }
 558
 559 static int ieee80211_set_probe_resp(struct ieee80211_sub_if_data *sdata,
 560                                     const u8 *resp, size_t resp_len,
 561                                     const struct ieee80211_csa_settings *csa)
 562 {
 563         struct probe_resp *new, *old;
 564
 565         if (!resp || !resp_len)
 566                 return 1;
 567
 568         old = sdata_dereference(sdata->u.ap.probe_resp, sdata);
 569
 570         new = kzalloc(sizeof(struct probe_resp) + resp_len, GFP_KERNEL);
 571         if (!new)
 572                 return -ENOMEM;
 573
 574         new->len = resp_len;
 575         memcpy(new->data, resp, resp_len);
 576
 577         if (csa)
 578                 memcpy(new->csa_counter_offsets, csa->counter_offsets_presp,
 579                        csa->n_counter_offsets_presp *
 580                        sizeof(new->csa_counter_offsets[0]));
 581
 582         rcu_assign_pointer(sdata->u.ap.probe_resp, new);
 583         if (old)
 584                 kfree_rcu(old, rcu_head);
 585
 586         return 0;
 587 }
 588
 589 static int ieee80211_assign_beacon(struct ieee80211_sub_if_data *sdata,
 590                                    struct cfg80211_beacon_data *params,
 591                                    const struct ieee80211_csa_settings *csa)
 592 {
 593         struct beacon_data *new, *old;
 594         int new_head_len, new_tail_len;
 595         int size, err;
 596         u32 changed = BSS_CHANGED_BEACON;
 597
 598         old = sdata_dereference(sdata->u.ap.beacon, sdata);
 599
 600
 601         /* Need to have a beacon head if we don't have one yet */
 602         if (!params->head && !old)
 603                 return -EINVAL;
 604
 605         /* new or old head? */
 606         if (params->head)
 607                 new_head_len = params->head_len;
 608         else
 609                 new_head_len = old->head_len;
 610
 611         /* new or old tail? */
 612         if (params->tail || !old)
 613                 /* params->tail_len will be zero for !params->tail */
 614                 new_tail_len = params->tail_len;
 615         else
 616                 new_tail_len = old->tail_len;
 617
 618         size = sizeof(*new) + new_head_len + new_tail_len;
 619
 620         new = kzalloc(size, GFP_KERNEL);
 621         if (!new)
 622                 return -ENOMEM;
 623
 624         /* start filling the new info now */
 625
 626         /*
 627          * pointers go into the block we allocated,
 628          * memory is | beacon_data | head | tail |
 629          */
 630         new->head = ((u8 *) new) + sizeof(*new);
 631         new->tail = new->head + new_head_len;
 632         new->head_len = new_head_len;
 633         new->tail_len = new_tail_len;
 634
 635         if (csa) {
 636                 new->csa_current_counter = csa->count;
 637                 memcpy(new->csa_counter_offsets, csa->counter_offsets_beacon,
 638                        csa->n_counter_offsets_beacon *
 639                        sizeof(new->csa_counter_offsets[0]));
 640         }
 641
 642         /* copy in head */
 643         if (params->head)
 644                 memcpy(new->head, params->head, new_head_len);
 645         else
 646                 memcpy(new->head, old->head, new_head_len);
 647
 648         /* copy in optional tail */
 649         if (params->tail)
 650                 memcpy(new->tail, params->tail, new_tail_len);
 651         else
 652                 if (old)
 653                         memcpy(new->tail, old->tail, new_tail_len);
 654
 655         err = ieee80211_set_probe_resp(sdata, params->probe_resp,
 656                                        params->probe_resp_len, csa);
 657         if (err < 0)
 658                 return err;
 659         if (err == 0)
 660                 changed |= BSS_CHANGED_AP_PROBE_RESP;
 661
 662         rcu_assign_pointer(sdata->u.ap.beacon, new);
 663
 664         if (old)
 665                 kfree_rcu(old, rcu_head);
 666
 667         return changed;
 668 }
 669
 670 static int ieee80211_start_ap(struct wiphy *wiphy, struct net_device *dev,
 671                               struct cfg80211_ap_settings *params)
 672 {
 673         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 674         struct ieee80211_local *local = sdata->local;
 675         struct beacon_data *old;
 676         struct ieee80211_sub_if_data *vlan;
 677         u32 changed = BSS_CHANGED_BEACON_INT |
 678                       BSS_CHANGED_BEACON_ENABLED |
 679                       BSS_CHANGED_BEACON |
 680                       BSS_CHANGED_SSID |
 681                       BSS_CHANGED_P2P_PS |
 682                       BSS_CHANGED_TXPOWER;
 683         int err;
 684
 685         old = sdata_dereference(sdata->u.ap.beacon, sdata);
 686         if (old)
 687                 return -EALREADY;
 688
 689         switch (params->smps_mode) {
 690         case NL80211_SMPS_OFF:
 691                 sdata->smps_mode = IEEE80211_SMPS_OFF;
 692                 break;
 693         case NL80211_SMPS_STATIC:
 694                 sdata->smps_mode = IEEE80211_SMPS_STATIC;
 695                 break;
 696         case NL80211_SMPS_DYNAMIC:
 697                 sdata->smps_mode = IEEE80211_SMPS_DYNAMIC;
 698                 break;
 699         default:
 700                 return -EINVAL;
 701         }
 702         sdata->needed_rx_chains = sdata->local->rx_chains;
 703
 704         mutex_lock(&local->mtx);
 705         err = ieee80211_vif_use_channel(sdata, &params->chandef,
 706                                         IEEE80211_CHANCTX_SHARED);
 707         if (!err)
 708                 ieee80211_vif_copy_chanctx_to_vlans(sdata, false);
 709         mutex_unlock(&local->mtx);
 710         if (err)
 711                 return err;
 712
 713         /*
 714          * Apply control port protocol, this allows us to
 715          * not encrypt dynamic WEP control frames.
 716          */
 717         sdata->control_port_protocol = params->crypto.control_port_ethertype;
 718         sdata->control_port_no_encrypt = params->crypto.control_port_no_encrypt;
 719         sdata->encrypt_headroom = ieee80211_cs_headroom(sdata->local,
 720                                                         &params->crypto,
 721                                                         sdata->vif.type);
 722
 723         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list) {
 724                 vlan->control_port_protocol =
 725                         params->crypto.control_port_ethertype;
 726                 vlan->control_port_no_encrypt =
 727                         params->crypto.control_port_no_encrypt;
 728                 vlan->encrypt_headroom =
 729                         ieee80211_cs_headroom(sdata->local,
 730                                               &params->crypto,
 731                                               vlan->vif.type);
 732         }
 733
 734         sdata->vif.bss_conf.beacon_int = params->beacon_interval;
 735         sdata->vif.bss_conf.dtim_period = params->dtim_period;
 736         sdata->vif.bss_conf.enable_beacon = true;
 737         sdata->vif.bss_conf.allow_p2p_go_ps = sdata->vif.p2p;
 738
 739         sdata->vif.bss_conf.ssid_len = params->ssid_len;
 740         if (params->ssid_len)
 741                 memcpy(sdata->vif.bss_conf.ssid, params->ssid,
 742                        params->ssid_len);
 743         sdata->vif.bss_conf.hidden_ssid =
 744                 (params->hidden_ssid != NL80211_HIDDEN_SSID_NOT_IN_USE);
 745
 746         memset(&sdata->vif.bss_conf.p2p_noa_attr, 0,
 747                sizeof(sdata->vif.bss_conf.p2p_noa_attr));
 748         sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow =
 749                 params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
 750         if (params->p2p_opp_ps)
 751                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
 752                                         IEEE80211_P2P_OPPPS_ENABLE_BIT;
 753
 754         err = ieee80211_assign_beacon(sdata, &params->beacon, NULL);
 755         if (err < 0) {
 756                 ieee80211_vif_release_channel(sdata);
 757                 return err;
 758         }
 759         changed |= err;
 760
 761         err = drv_start_ap(sdata->local, sdata);
 762         if (err) {
 763                 old = sdata_dereference(sdata->u.ap.beacon, sdata);
 764
 765                 if (old)
 766                         kfree_rcu(old, rcu_head);
 767                 RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
 768                 ieee80211_vif_release_channel(sdata);
 769                 return err;
 770         }
 771
 772         ieee80211_recalc_dtim(local, sdata);
 773         ieee80211_bss_info_change_notify(sdata, changed);
 774
 775         netif_carrier_on(dev);
 776         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
 777                 netif_carrier_on(vlan->dev);
 778
 779         return 0;
 780 }
 781
 782 static int ieee80211_change_beacon(struct wiphy *wiphy, struct net_device *dev,
 783                                    struct cfg80211_beacon_data *params)
 784 {
 785         struct ieee80211_sub_if_data *sdata;
 786         struct beacon_data *old;
 787         int err;
 788
 789         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 790         sdata_assert_lock(sdata);
 791
 792         /* don't allow changing the beacon while CSA is in place - offset
 793          * of channel switch counter may change
 794          */
 795         if (sdata->vif.csa_active)
 796                 return -EBUSY;
 797
 798         old = sdata_dereference(sdata->u.ap.beacon, sdata);
 799         if (!old)
 800                 return -ENOENT;
 801
 802         err = ieee80211_assign_beacon(sdata, params, NULL);
 803         if (err < 0)
 804                 return err;
 805         ieee80211_bss_info_change_notify(sdata, err);
 806         return 0;
 807 }
 808
 809 static int ieee80211_stop_ap(struct wiphy *wiphy, struct net_device *dev)
 810 {
 811         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
 812         struct ieee80211_sub_if_data *vlan;
 813         struct ieee80211_local *local = sdata->local;
 814         struct beacon_data *old_beacon;
 815         struct probe_resp *old_probe_resp;
 816         struct cfg80211_chan_def chandef;
 817
 818         sdata_assert_lock(sdata);
 819
 820         old_beacon = sdata_dereference(sdata->u.ap.beacon, sdata);
 821         if (!old_beacon)
 822                 return -ENOENT;
 823         old_probe_resp = sdata_dereference(sdata->u.ap.probe_resp, sdata);
 824
 825         /* abort any running channel switch */
 826         mutex_lock(&local->mtx);
 827         sdata->vif.csa_active = false;
 828         if (sdata->csa_block_tx) {
 829                 ieee80211_wake_vif_queues(local, sdata,
 830                                           IEEE80211_QUEUE_STOP_REASON_CSA);
 831                 sdata->csa_block_tx = false;
 832         }
 833
 834         mutex_unlock(&local->mtx);
 835
 836         kfree(sdata->u.ap.next_beacon);
 837         sdata->u.ap.next_beacon = NULL;
 838
 839         /* turn off carrier for this interface and dependent VLANs */
 840         list_for_each_entry(vlan, &sdata->u.ap.vlans, u.vlan.list)
 841                 netif_carrier_off(vlan->dev);
 842         netif_carrier_off(dev);
 843
 844         /* remove beacon and probe response */
 845         RCU_INIT_POINTER(sdata->u.ap.beacon, NULL);
 846         RCU_INIT_POINTER(sdata->u.ap.probe_resp, NULL);
 847         kfree_rcu(old_beacon, rcu_head);
 848         if (old_probe_resp)
 849                 kfree_rcu(old_probe_resp, rcu_head);
 850         sdata->u.ap.driver_smps_mode = IEEE80211_SMPS_OFF;
 851
 852         __sta_info_flush(sdata, true);
 853         ieee80211_free_keys(sdata, true);
 854
 855         sdata->vif.bss_conf.enable_beacon = false;
 856         sdata->vif.bss_conf.ssid_len = 0;
 857         clear_bit(SDATA_STATE_OFFCHANNEL_BEACON_STOPPED, &sdata->state);
 858         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_BEACON_ENABLED);
 859
 860         if (sdata->wdev.cac_started) {
 861                 chandef = sdata->vif.bss_conf.chandef;
 862                 cancel_delayed_work_sync(&sdata->dfs_cac_timer_work);
 863                 cfg80211_cac_event(sdata->dev, &chandef,
 864                                    NL80211_RADAR_CAC_ABORTED,
 865                                    GFP_KERNEL);
 866         }
 867
 868         drv_stop_ap(sdata->local, sdata);
 869
 870         /* free all potentially still buffered bcast frames */
 871         local->total_ps_buffered -= skb_queue_len(&sdata->u.ap.ps.bc_buf);
 872         skb_queue_purge(&sdata->u.ap.ps.bc_buf);
 873
 874         mutex_lock(&local->mtx);
 875         ieee80211_vif_copy_chanctx_to_vlans(sdata, true);
 876         ieee80211_vif_release_channel(sdata);
 877         mutex_unlock(&local->mtx);
 878
 879         return 0;
 880 }
 881
 882 /* Layer 2 Update frame (802.2 Type 1 LLC XID Update response) */
 883 struct iapp_layer2_update {
 884         u8 da[ETH_ALEN];        /* broadcast */
 885         u8 sa[ETH_ALEN];        /* STA addr */
 886         __be16 len;             /* 6 */
 887         u8 dsap;                /* 0 */
 888         u8 ssap;                /* 0 */
 889         u8 control;
 890         u8 xid_info[3];
 891 } __packed;
 892
 893 static void ieee80211_send_layer2_update(struct sta_info *sta)
 894 {
 895         struct iapp_layer2_update *msg;
 896         struct sk_buff *skb;
 897
 898         /* Send Level 2 Update Frame to update forwarding tables in layer 2
 899          * bridge devices */
 900
 901         skb = dev_alloc_skb(sizeof(*msg));
 902         if (!skb)
 903                 return;
 904         msg = (struct iapp_layer2_update *)skb_put(skb, sizeof(*msg));
 905
 906         /* 802.2 Type 1 Logical Link Control (LLC) Exchange Identifier (XID)
 907          * Update response frame; IEEE Std 802.2-1998, 5.4.1.2.1 */
 908
 909         eth_broadcast_addr(msg->da);
 910         memcpy(msg->sa, sta->sta.addr, ETH_ALEN);
 911         msg->len = htons(6);
 912         msg->dsap = 0;
 913         msg->ssap = 0x01;       /* NULL LSAP, CR Bit: Response */
 914         msg->control = 0xaf;    /* XID response lsb.1111F101.
 915                                  * F=0 (no poll command; unsolicited frame) */
 916         msg->xid_info[0] = 0x81;        /* XID format identifier */
 917         msg->xid_info[1] = 1;   /* LLC types/classes: Type 1 LLC */
 918         msg->xid_info[2] = 0;   /* XID sender's receive window size (RW) */
 919
 920         skb->dev = sta->sdata->dev;
 921         skb->protocol = eth_type_trans(skb, sta->sdata->dev);
 922         memset(skb->cb, 0, sizeof(skb->cb));
 923         netif_rx_ni(skb);
 924 }
 925
 926 static int sta_apply_auth_flags(struct ieee80211_local *local,
 927                                 struct sta_info *sta,
 928                                 u32 mask, u32 set)
 929 {
 930         int ret;
 931
 932         if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
 933             set & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
 934             !test_sta_flag(sta, WLAN_STA_AUTH)) {
 935                 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
 936                 if (ret)
 937                         return ret;
 938         }
 939
 940         if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
 941             set & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
 942             !test_sta_flag(sta, WLAN_STA_ASSOC)) {
 943                 /*
 944                  * When peer becomes associated, init rate control as
 945                  * well. Some drivers require rate control initialized
 946                  * before drv_sta_state() is called.
 947                  */
 948                 if (!test_sta_flag(sta, WLAN_STA_RATE_CONTROL))
 949                         rate_control_rate_init(sta);
 950
 951                 ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
 952                 if (ret)
 953                         return ret;
 954         }
 955
 956         if (mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
 957                 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED))
 958                         ret = sta_info_move_state(sta, IEEE80211_STA_AUTHORIZED);
 959                 else if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
 960                         ret = sta_info_move_state(sta, IEEE80211_STA_ASSOC);
 961                 else
 962                         ret = 0;
 963                 if (ret)
 964                         return ret;
 965         }
 966
 967         if (mask & BIT(NL80211_STA_FLAG_ASSOCIATED) &&
 968             !(set & BIT(NL80211_STA_FLAG_ASSOCIATED)) &&
 969             test_sta_flag(sta, WLAN_STA_ASSOC)) {
 970                 ret = sta_info_move_state(sta, IEEE80211_STA_AUTH);
 971                 if (ret)
 972                         return ret;
 973         }
 974
 975         if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED) &&
 976             !(set & BIT(NL80211_STA_FLAG_AUTHENTICATED)) &&
 977             test_sta_flag(sta, WLAN_STA_AUTH)) {
 978                 ret = sta_info_move_state(sta, IEEE80211_STA_NONE);
 979                 if (ret)
 980                         return ret;
 981         }
 982
 983         return 0;
 984 }
 985
 986 static void sta_apply_mesh_params(struct ieee80211_local *local,
 987                                   struct sta_info *sta,
 988                                   struct station_parameters *params)
 989 {
 990 #ifdef CONFIG_MAC80211_MESH
 991         struct ieee80211_sub_if_data *sdata = sta->sdata;
 992         u32 changed = 0;
 993
 994         if (params->sta_modify_mask & STATION_PARAM_APPLY_PLINK_STATE) {
 995                 switch (params->plink_state) {
 996                 case NL80211_PLINK_ESTAB:
 997                         if (sta->mesh->plink_state != NL80211_PLINK_ESTAB)
 998                                 changed = mesh_plink_inc_estab_count(sdata);
 999                         sta->mesh->plink_state = params->plink_state;
1000
1001                         ieee80211_mps_sta_status_update(sta);
1002                         changed |= ieee80211_mps_set_sta_local_pm(sta,
1003                                       sdata->u.mesh.mshcfg.power_mode);
1004                         break;
1005                 case NL80211_PLINK_LISTEN:
1006                 case NL80211_PLINK_BLOCKED:
1007                 case NL80211_PLINK_OPN_SNT:
1008                 case NL80211_PLINK_OPN_RCVD:
1009                 case NL80211_PLINK_CNF_RCVD:
1010                 case NL80211_PLINK_HOLDING:
1011                         if (sta->mesh->plink_state == NL80211_PLINK_ESTAB)
1012                                 changed = mesh_plink_dec_estab_count(sdata);
1013                         sta->mesh->plink_state = params->plink_state;
1014
1015                         ieee80211_mps_sta_status_update(sta);
1016                         changed |= ieee80211_mps_set_sta_local_pm(sta,
1017                                         NL80211_MESH_POWER_UNKNOWN);
1018                         break;
1019                 default:
1020                         /*  nothing  */
1021                         break;
1022                 }
1023         }
1024
1025         switch (params->plink_action) {
1026         case NL80211_PLINK_ACTION_NO_ACTION:
1027                 /* nothing */
1028                 break;
1029         case NL80211_PLINK_ACTION_OPEN:
1030                 changed |= mesh_plink_open(sta);
1031                 break;
1032         case NL80211_PLINK_ACTION_BLOCK:
1033                 changed |= mesh_plink_block(sta);
1034                 break;
1035         }
1036
1037         if (params->local_pm)
1038                 changed |= ieee80211_mps_set_sta_local_pm(sta,
1039                                                           params->local_pm);
1040
1041         ieee80211_mbss_info_change_notify(sdata, changed);
1042 #endif
1043 }
1044
1045 static int sta_apply_parameters(struct ieee80211_local *local,
1046                                 struct sta_info *sta,
1047                                 struct station_parameters *params)
1048 {
1049         int ret = 0;
1050         struct ieee80211_supported_band *sband;
1051         struct ieee80211_sub_if_data *sdata = sta->sdata;
1052         enum nl80211_band band = ieee80211_get_sdata_band(sdata);
1053         u32 mask, set;
1054
1055         sband = local->hw.wiphy->bands[band];
1056
1057         mask = params->sta_flags_mask;
1058         set = params->sta_flags_set;
1059
1060         if (ieee80211_vif_is_mesh(&sdata->vif)) {
1061                 /*
1062                  * In mesh mode, ASSOCIATED isn't part of the nl80211
1063                  * API but must follow AUTHENTICATED for driver state.
1064                  */
1065                 if (mask & BIT(NL80211_STA_FLAG_AUTHENTICATED))
1066                         mask |= BIT(NL80211_STA_FLAG_ASSOCIATED);
1067                 if (set & BIT(NL80211_STA_FLAG_AUTHENTICATED))
1068                         set |= BIT(NL80211_STA_FLAG_ASSOCIATED);
1069         } else if (test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1070                 /*
1071                  * TDLS -- everything follows authorized, but
1072                  * only becoming authorized is possible, not
1073                  * going back
1074                  */
1075                 if (set & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1076                         set |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1077                                BIT(NL80211_STA_FLAG_ASSOCIATED);
1078                         mask |= BIT(NL80211_STA_FLAG_AUTHENTICATED) |
1079                                 BIT(NL80211_STA_FLAG_ASSOCIATED);
1080                 }
1081         }
1082
1083         if (mask & BIT(NL80211_STA_FLAG_WME) &&
1084             local->hw.queues >= IEEE80211_NUM_ACS)
1085                 sta->sta.wme = set & BIT(NL80211_STA_FLAG_WME);
1086
1087         /* auth flags will be set later for TDLS,
1088          * and for unassociated stations that move to assocaited */
1089         if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1090             !((mask & BIT(NL80211_STA_FLAG_ASSOCIATED)) &&
1091               (set & BIT(NL80211_STA_FLAG_ASSOCIATED)))) {
1092                 ret = sta_apply_auth_flags(local, sta, mask, set);
1093                 if (ret)
1094                         return ret;
1095         }
1096
1097         if (mask & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE)) {
1098                 if (set & BIT(NL80211_STA_FLAG_SHORT_PREAMBLE))
1099                         set_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1100                 else
1101                         clear_sta_flag(sta, WLAN_STA_SHORT_PREAMBLE);
1102         }
1103
1104         if (mask & BIT(NL80211_STA_FLAG_MFP)) {
1105                 sta->sta.mfp = !!(set & BIT(NL80211_STA_FLAG_MFP));
1106                 if (set & BIT(NL80211_STA_FLAG_MFP))
1107                         set_sta_flag(sta, WLAN_STA_MFP);
1108                 else
1109                         clear_sta_flag(sta, WLAN_STA_MFP);
1110         }
1111
1112         if (mask & BIT(NL80211_STA_FLAG_TDLS_PEER)) {
1113                 if (set & BIT(NL80211_STA_FLAG_TDLS_PEER))
1114                         set_sta_flag(sta, WLAN_STA_TDLS_PEER);
1115                 else
1116                         clear_sta_flag(sta, WLAN_STA_TDLS_PEER);
1117         }
1118
1119         /* mark TDLS channel switch support, if the AP allows it */
1120         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1121             !sdata->u.mgd.tdls_chan_switch_prohibited &&
1122             params->ext_capab_len >= 4 &&
1123             params->ext_capab[3] & WLAN_EXT_CAPA4_TDLS_CHAN_SWITCH)
1124                 set_sta_flag(sta, WLAN_STA_TDLS_CHAN_SWITCH);
1125
1126         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1127             !sdata->u.mgd.tdls_wider_bw_prohibited &&
1128             ieee80211_hw_check(&local->hw, TDLS_WIDER_BW) &&
1129             params->ext_capab_len >= 8 &&
1130             params->ext_capab[7] & WLAN_EXT_CAPA8_TDLS_WIDE_BW_ENABLED)
1131                 set_sta_flag(sta, WLAN_STA_TDLS_WIDER_BW);
1132
1133         if (params->sta_modify_mask & STATION_PARAM_APPLY_UAPSD) {
1134                 sta->sta.uapsd_queues = params->uapsd_queues;
1135                 sta->sta.max_sp = params->max_sp;
1136         }
1137
1138         /* The sender might not have sent the last bit, consider it to be 0 */
1139         if (params->ext_capab_len >= 8) {
1140                 u8 val = (params->ext_capab[7] &
1141                           WLAN_EXT_CAPA8_MAX_MSDU_IN_AMSDU_LSB) >> 7;
1142
1143                 /* we did get all the bits, take the MSB as well */
1144                 if (params->ext_capab_len >= 9) {
1145                         u8 val_msb = params->ext_capab[8] &
1146                                 WLAN_EXT_CAPA9_MAX_MSDU_IN_AMSDU_MSB;
1147                         val_msb <<= 1;
1148                         val |= val_msb;
1149                 }
1150
1151                 switch (val) {
1152                 case 1:
1153                         sta->sta.max_amsdu_subframes = 32;
1154                         break;
1155                 case 2:
1156                         sta->sta.max_amsdu_subframes = 16;
1157                         break;
1158                 case 3:
1159                         sta->sta.max_amsdu_subframes = 8;
1160                         break;
1161                 default:
1162                         sta->sta.max_amsdu_subframes = 0;
1163                 }
1164         }
1165
1166         /*
1167          * cfg80211 validates this (1-2007) and allows setting the AID
1168          * only when creating a new station entry
1169          */
1170         if (params->aid)
1171                 sta->sta.aid = params->aid;
1172
1173         /*
1174          * Some of the following updates would be racy if called on an
1175          * existing station, via ieee80211_change_station(). However,
1176          * all such changes are rejected by cfg80211 except for updates
1177          * changing the supported rates on an existing but not yet used
1178          * TDLS peer.
1179          */
1180
1181         if (params->listen_interval >= 0)
1182                 sta->listen_interval = params->listen_interval;
1183
1184         if (params->supported_rates) {
1185                 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef,
1186                                          sband, params->supported_rates,
1187                                          params->supported_rates_len,
1188                                          &sta->sta.supp_rates[band]);
1189         }
1190
1191         if (params->ht_capa)
1192                 ieee80211_ht_cap_ie_to_sta_ht_cap(sdata, sband,
1193                                                   params->ht_capa, sta);
1194
1195         /* VHT can override some HT caps such as the A-MSDU max length */
1196         if (params->vht_capa)
1197                 ieee80211_vht_cap_ie_to_sta_vht_cap(sdata, sband,
1198                                                     params->vht_capa, sta);
1199
1200         if (params->opmode_notif_used) {
1201                 /* returned value is only needed for rc update, but the
1202                  * rc isn't initialized here yet, so ignore it
1203                  */
1204                 __ieee80211_vht_handle_opmode(sdata, sta,
1205                                               params->opmode_notif, band);
1206         }
1207
1208         if (params->support_p2p_ps >= 0)
1209                 sta->sta.support_p2p_ps = params->support_p2p_ps;
1210
1211         if (ieee80211_vif_is_mesh(&sdata->vif))
1212                 sta_apply_mesh_params(local, sta, params);
1213
1214         /* set the STA state after all sta info from usermode has been set */
1215         if (test_sta_flag(sta, WLAN_STA_TDLS_PEER) ||
1216             set & BIT(NL80211_STA_FLAG_ASSOCIATED)) {
1217                 ret = sta_apply_auth_flags(local, sta, mask, set);
1218                 if (ret)
1219                         return ret;
1220         }
1221
1222         return 0;
1223 }
1224
1225 static int ieee80211_add_station(struct wiphy *wiphy, struct net_device *dev,
1226                                  const u8 *mac,
1227                                  struct station_parameters *params)
1228 {
1229         struct ieee80211_local *local = wiphy_priv(wiphy);
1230         struct sta_info *sta;
1231         struct ieee80211_sub_if_data *sdata;
1232         int err;
1233         int layer2_update;
1234
1235         if (params->vlan) {
1236                 sdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1237
1238                 if (sdata->vif.type != NL80211_IFTYPE_AP_VLAN &&
1239                     sdata->vif.type != NL80211_IFTYPE_AP)
1240                         return -EINVAL;
1241         } else
1242                 sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1243
1244         if (ether_addr_equal(mac, sdata->vif.addr))
1245                 return -EINVAL;
1246
1247         if (is_multicast_ether_addr(mac))
1248                 return -EINVAL;
1249
1250         sta = sta_info_alloc(sdata, mac, GFP_KERNEL);
1251         if (!sta)
1252                 return -ENOMEM;
1253
1254         if (params->sta_flags_set & BIT(NL80211_STA_FLAG_TDLS_PEER))
1255                 sta->sta.tdls = true;
1256
1257         err = sta_apply_parameters(local, sta, params);
1258         if (err) {
1259                 sta_info_free(local, sta);
1260                 return err;
1261         }
1262
1263         /*
1264          * for TDLS and for unassociated station, rate control should be
1265          * initialized only when rates are known and station is marked
1266          * authorized/associated
1267          */
1268         if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER) &&
1269             test_sta_flag(sta, WLAN_STA_ASSOC))
1270                 rate_control_rate_init(sta);
1271
1272         layer2_update = sdata->vif.type == NL80211_IFTYPE_AP_VLAN ||
1273                 sdata->vif.type == NL80211_IFTYPE_AP;
1274
1275         err = sta_info_insert_rcu(sta);
1276         if (err) {
1277                 rcu_read_unlock();
1278                 return err;
1279         }
1280
1281         if (layer2_update)
1282                 ieee80211_send_layer2_update(sta);
1283
1284         rcu_read_unlock();
1285
1286         return 0;
1287 }
1288
1289 static int ieee80211_del_station(struct wiphy *wiphy, struct net_device *dev,
1290                                  struct station_del_parameters *params)
1291 {
1292         struct ieee80211_sub_if_data *sdata;
1293
1294         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1295
1296         if (params->mac)
1297                 return sta_info_destroy_addr_bss(sdata, params->mac);
1298
1299         sta_info_flush(sdata);
1300         return 0;
1301 }
1302
1303 static int ieee80211_change_station(struct wiphy *wiphy,
1304                                     struct net_device *dev, const u8 *mac,
1305                                     struct station_parameters *params)
1306 {
1307         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1308         struct ieee80211_local *local = wiphy_priv(wiphy);
1309         struct sta_info *sta;
1310         struct ieee80211_sub_if_data *vlansdata;
1311         enum cfg80211_station_type statype;
1312         int err;
1313
1314         mutex_lock(&local->sta_mtx);
1315
1316         sta = sta_info_get_bss(sdata, mac);
1317         if (!sta) {
1318                 err = -ENOENT;
1319                 goto out_err;
1320         }
1321
1322         switch (sdata->vif.type) {
1323         case NL80211_IFTYPE_MESH_POINT:
1324                 if (sdata->u.mesh.user_mpm)
1325                         statype = CFG80211_STA_MESH_PEER_USER;
1326                 else
1327                         statype = CFG80211_STA_MESH_PEER_KERNEL;
1328                 break;
1329         case NL80211_IFTYPE_ADHOC:
1330                 statype = CFG80211_STA_IBSS;
1331                 break;
1332         case NL80211_IFTYPE_STATION:
1333                 if (!test_sta_flag(sta, WLAN_STA_TDLS_PEER)) {
1334                         statype = CFG80211_STA_AP_STA;
1335                         break;
1336                 }
1337                 if (test_sta_flag(sta, WLAN_STA_AUTHORIZED))
1338                         statype = CFG80211_STA_TDLS_PEER_ACTIVE;
1339                 else
1340                         statype = CFG80211_STA_TDLS_PEER_SETUP;
1341                 break;
1342         case NL80211_IFTYPE_AP:
1343         case NL80211_IFTYPE_AP_VLAN:
1344                 if (test_sta_flag(sta, WLAN_STA_ASSOC))
1345                         statype = CFG80211_STA_AP_CLIENT;
1346                 else
1347                         statype = CFG80211_STA_AP_CLIENT_UNASSOC;
1348                 break;
1349         default:
1350                 err = -EOPNOTSUPP;
1351                 goto out_err;
1352         }
1353
1354         err = cfg80211_check_station_change(wiphy, params, statype);
1355         if (err)
1356                 goto out_err;
1357
1358         if (params->vlan && params->vlan != sta->sdata->dev) {
1359                 bool prev_4addr = false;
1360                 bool new_4addr = false;
1361
1362                 vlansdata = IEEE80211_DEV_TO_SUB_IF(params->vlan);
1363
1364                 if (params->vlan->ieee80211_ptr->use_4addr) {
1365                         if (vlansdata->u.vlan.sta) {
1366                                 err = -EBUSY;
1367                                 goto out_err;
1368                         }
1369
1370                         rcu_assign_pointer(vlansdata->u.vlan.sta, sta);
1371                         new_4addr = true;
1372                         __ieee80211_check_fast_rx_iface(vlansdata);
1373                 }
1374
1375                 if (sta->sdata->vif.type == NL80211_IFTYPE_AP_VLAN &&
1376                     sta->sdata->u.vlan.sta) {
1377                         RCU_INIT_POINTER(sta->sdata->u.vlan.sta, NULL);
1378                         prev_4addr = true;
1379                 }
1380
1381                 sta->sdata = vlansdata;
1382                 ieee80211_check_fast_xmit(sta);
1383
1384                 if (sta->sta_state == IEEE80211_STA_AUTHORIZED &&
1385                     prev_4addr != new_4addr) {
1386                         if (new_4addr)
1387                                 atomic_dec(&sta->sdata->bss->num_mcast_sta);
1388                         else
1389                                 atomic_inc(&sta->sdata->bss->num_mcast_sta);
1390                 }
1391
1392                 ieee80211_send_layer2_update(sta);
1393         }
1394
1395         err = sta_apply_parameters(local, sta, params);
1396         if (err)
1397                 goto out_err;
1398
1399         mutex_unlock(&local->sta_mtx);
1400
1401         if ((sdata->vif.type == NL80211_IFTYPE_AP ||
1402              sdata->vif.type == NL80211_IFTYPE_AP_VLAN) &&
1403             sta->known_smps_mode != sta->sdata->bss->req_smps &&
1404             test_sta_flag(sta, WLAN_STA_AUTHORIZED) &&
1405             sta_info_tx_streams(sta) != 1) {
1406                 ht_dbg(sta->sdata,
1407                        "%pM just authorized and MIMO capable - update SMPS\n",
1408                        sta->sta.addr);
1409                 ieee80211_send_smps_action(sta->sdata,
1410                         sta->sdata->bss->req_smps,
1411                         sta->sta.addr,
1412                         sta->sdata->vif.bss_conf.bssid);
1413         }
1414
1415         if (sdata->vif.type == NL80211_IFTYPE_STATION &&
1416             params->sta_flags_mask & BIT(NL80211_STA_FLAG_AUTHORIZED)) {
1417                 ieee80211_recalc_ps(local);
1418                 ieee80211_recalc_ps_vif(sdata);
1419         }
1420
1421         return 0;
1422 out_err:
1423         mutex_unlock(&local->sta_mtx);
1424         return err;
1425 }
1426
1427 #ifdef CONFIG_MAC80211_MESH
1428 static int ieee80211_add_mpath(struct wiphy *wiphy, struct net_device *dev,
1429                                const u8 *dst, const u8 *next_hop)
1430 {
1431         struct ieee80211_sub_if_data *sdata;
1432         struct mesh_path *mpath;
1433         struct sta_info *sta;
1434
1435         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1436
1437         rcu_read_lock();
1438         sta = sta_info_get(sdata, next_hop);
1439         if (!sta) {
1440                 rcu_read_unlock();
1441                 return -ENOENT;
1442         }
1443
1444         mpath = mesh_path_add(sdata, dst);
1445         if (IS_ERR(mpath)) {
1446                 rcu_read_unlock();
1447                 return PTR_ERR(mpath);
1448         }
1449
1450         mesh_path_fix_nexthop(mpath, sta);
1451
1452         rcu_read_unlock();
1453         return 0;
1454 }
1455
1456 static int ieee80211_del_mpath(struct wiphy *wiphy, struct net_device *dev,
1457                                const u8 *dst)
1458 {
1459         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1460
1461         if (dst)
1462                 return mesh_path_del(sdata, dst);
1463
1464         mesh_path_flush_by_iface(sdata);
1465         return 0;
1466 }
1467
1468 static int ieee80211_change_mpath(struct wiphy *wiphy, struct net_device *dev,
1469                                   const u8 *dst, const u8 *next_hop)
1470 {
1471         struct ieee80211_sub_if_data *sdata;
1472         struct mesh_path *mpath;
1473         struct sta_info *sta;
1474
1475         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1476
1477         rcu_read_lock();
1478
1479         sta = sta_info_get(sdata, next_hop);
1480         if (!sta) {
1481                 rcu_read_unlock();
1482                 return -ENOENT;
1483         }
1484
1485         mpath = mesh_path_lookup(sdata, dst);
1486         if (!mpath) {
1487                 rcu_read_unlock();
1488                 return -ENOENT;
1489         }
1490
1491         mesh_path_fix_nexthop(mpath, sta);
1492
1493         rcu_read_unlock();
1494         return 0;
1495 }
1496
1497 static void mpath_set_pinfo(struct mesh_path *mpath, u8 *next_hop,
1498                             struct mpath_info *pinfo)
1499 {
1500         struct sta_info *next_hop_sta = rcu_dereference(mpath->next_hop);
1501
1502         if (next_hop_sta)
1503                 memcpy(next_hop, next_hop_sta->sta.addr, ETH_ALEN);
1504         else
1505                 eth_zero_addr(next_hop);
1506
1507         memset(pinfo, 0, sizeof(*pinfo));
1508
1509         pinfo->generation = mpath->sdata->u.mesh.mesh_paths_generation;
1510
1511         pinfo->filled = MPATH_INFO_FRAME_QLEN |
1512                         MPATH_INFO_SN |
1513                         MPATH_INFO_METRIC |
1514                         MPATH_INFO_EXPTIME |
1515                         MPATH_INFO_DISCOVERY_TIMEOUT |
1516                         MPATH_INFO_DISCOVERY_RETRIES |
1517                         MPATH_INFO_FLAGS;
1518
1519         pinfo->frame_qlen = mpath->frame_queue.qlen;
1520         pinfo->sn = mpath->sn;
1521         pinfo->metric = mpath->metric;
1522         if (time_before(jiffies, mpath->exp_time))
1523                 pinfo->exptime = jiffies_to_msecs(mpath->exp_time - jiffies);
1524         pinfo->discovery_timeout =
1525                         jiffies_to_msecs(mpath->discovery_timeout);
1526         pinfo->discovery_retries = mpath->discovery_retries;
1527         if (mpath->flags & MESH_PATH_ACTIVE)
1528                 pinfo->flags |= NL80211_MPATH_FLAG_ACTIVE;
1529         if (mpath->flags & MESH_PATH_RESOLVING)
1530                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVING;
1531         if (mpath->flags & MESH_PATH_SN_VALID)
1532                 pinfo->flags |= NL80211_MPATH_FLAG_SN_VALID;
1533         if (mpath->flags & MESH_PATH_FIXED)
1534                 pinfo->flags |= NL80211_MPATH_FLAG_FIXED;
1535         if (mpath->flags & MESH_PATH_RESOLVED)
1536                 pinfo->flags |= NL80211_MPATH_FLAG_RESOLVED;
1537 }
1538
1539 static int ieee80211_get_mpath(struct wiphy *wiphy, struct net_device *dev,
1540                                u8 *dst, u8 *next_hop, struct mpath_info *pinfo)
1541
1542 {
1543         struct ieee80211_sub_if_data *sdata;
1544         struct mesh_path *mpath;
1545
1546         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1547
1548         rcu_read_lock();
1549         mpath = mesh_path_lookup(sdata, dst);
1550         if (!mpath) {
1551                 rcu_read_unlock();
1552                 return -ENOENT;
1553         }
1554         memcpy(dst, mpath->dst, ETH_ALEN);
1555         mpath_set_pinfo(mpath, next_hop, pinfo);
1556         rcu_read_unlock();
1557         return 0;
1558 }
1559
1560 static int ieee80211_dump_mpath(struct wiphy *wiphy, struct net_device *dev,
1561                                 int idx, u8 *dst, u8 *next_hop,
1562                                 struct mpath_info *pinfo)
1563 {
1564         struct ieee80211_sub_if_data *sdata;
1565         struct mesh_path *mpath;
1566
1567         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1568
1569         rcu_read_lock();
1570         mpath = mesh_path_lookup_by_idx(sdata, idx);
1571         if (!mpath) {
1572                 rcu_read_unlock();
1573                 return -ENOENT;
1574         }
1575         memcpy(dst, mpath->dst, ETH_ALEN);
1576         mpath_set_pinfo(mpath, next_hop, pinfo);
1577         rcu_read_unlock();
1578         return 0;
1579 }
1580
1581 static void mpp_set_pinfo(struct mesh_path *mpath, u8 *mpp,
1582                           struct mpath_info *pinfo)
1583 {
1584         memset(pinfo, 0, sizeof(*pinfo));
1585         memcpy(mpp, mpath->mpp, ETH_ALEN);
1586
1587         pinfo->generation = mpath->sdata->u.mesh.mpp_paths_generation;
1588 }
1589
1590 static int ieee80211_get_mpp(struct wiphy *wiphy, struct net_device *dev,
1591                              u8 *dst, u8 *mpp, struct mpath_info *pinfo)
1592
1593 {
1594         struct ieee80211_sub_if_data *sdata;
1595         struct mesh_path *mpath;
1596
1597         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1598
1599         rcu_read_lock();
1600         mpath = mpp_path_lookup(sdata, dst);
1601         if (!mpath) {
1602                 rcu_read_unlock();
1603                 return -ENOENT;
1604         }
1605         memcpy(dst, mpath->dst, ETH_ALEN);
1606         mpp_set_pinfo(mpath, mpp, pinfo);
1607         rcu_read_unlock();
1608         return 0;
1609 }
1610
1611 static int ieee80211_dump_mpp(struct wiphy *wiphy, struct net_device *dev,
1612                               int idx, u8 *dst, u8 *mpp,
1613                               struct mpath_info *pinfo)
1614 {
1615         struct ieee80211_sub_if_data *sdata;
1616         struct mesh_path *mpath;
1617
1618         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1619
1620         rcu_read_lock();
1621         mpath = mpp_path_lookup_by_idx(sdata, idx);
1622         if (!mpath) {
1623                 rcu_read_unlock();
1624                 return -ENOENT;
1625         }
1626         memcpy(dst, mpath->dst, ETH_ALEN);
1627         mpp_set_pinfo(mpath, mpp, pinfo);
1628         rcu_read_unlock();
1629         return 0;
1630 }
1631
1632 static int ieee80211_get_mesh_config(struct wiphy *wiphy,
1633                                 struct net_device *dev,
1634                                 struct mesh_config *conf)
1635 {
1636         struct ieee80211_sub_if_data *sdata;
1637         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1638
1639         memcpy(conf, &(sdata->u.mesh.mshcfg), sizeof(struct mesh_config));
1640         return 0;
1641 }
1642
1643 static inline bool _chg_mesh_attr(enum nl80211_meshconf_params parm, u32 mask)
1644 {
1645         return (mask >> (parm-1)) & 0x1;
1646 }
1647
1648 static int copy_mesh_setup(struct ieee80211_if_mesh *ifmsh,
1649                 const struct mesh_setup *setup)
1650 {
1651         u8 *new_ie;
1652         const u8 *old_ie;
1653         struct ieee80211_sub_if_data *sdata = container_of(ifmsh,
1654                                         struct ieee80211_sub_if_data, u.mesh);
1655
1656         /* allocate information elements */
1657         new_ie = NULL;
1658         old_ie = ifmsh->ie;
1659
1660         if (setup->ie_len) {
1661                 new_ie = kmemdup(setup->ie, setup->ie_len,
1662                                 GFP_KERNEL);
1663                 if (!new_ie)
1664                         return -ENOMEM;
1665         }
1666         ifmsh->ie_len = setup->ie_len;
1667         ifmsh->ie = new_ie;
1668         kfree(old_ie);
1669
1670         /* now copy the rest of the setup parameters */
1671         ifmsh->mesh_id_len = setup->mesh_id_len;
1672         memcpy(ifmsh->mesh_id, setup->mesh_id, ifmsh->mesh_id_len);
1673         ifmsh->mesh_sp_id = setup->sync_method;
1674         ifmsh->mesh_pp_id = setup->path_sel_proto;
1675         ifmsh->mesh_pm_id = setup->path_metric;
1676         ifmsh->user_mpm = setup->user_mpm;
1677         ifmsh->mesh_auth_id = setup->auth_id;
1678         ifmsh->security = IEEE80211_MESH_SEC_NONE;
1679         if (setup->is_authenticated)
1680                 ifmsh->security |= IEEE80211_MESH_SEC_AUTHED;
1681         if (setup->is_secure)
1682                 ifmsh->security |= IEEE80211_MESH_SEC_SECURED;
1683
1684         /* mcast rate setting in Mesh Node */
1685         memcpy(sdata->vif.bss_conf.mcast_rate, setup->mcast_rate,
1686                                                 sizeof(setup->mcast_rate));
1687         sdata->vif.bss_conf.basic_rates = setup->basic_rates;
1688
1689         sdata->vif.bss_conf.beacon_int = setup->beacon_interval;
1690         sdata->vif.bss_conf.dtim_period = setup->dtim_period;
1691
1692         return 0;
1693 }
1694
1695 static int ieee80211_update_mesh_config(struct wiphy *wiphy,
1696                                         struct net_device *dev, u32 mask,
1697                                         const struct mesh_config *nconf)
1698 {
1699         struct mesh_config *conf;
1700         struct ieee80211_sub_if_data *sdata;
1701         struct ieee80211_if_mesh *ifmsh;
1702
1703         sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1704         ifmsh = &sdata->u.mesh;
1705
1706         /* Set the config options which we are interested in setting */
1707         conf = &(sdata->u.mesh.mshcfg);
1708         if (_chg_mesh_attr(NL80211_MESHCONF_RETRY_TIMEOUT, mask))
1709                 conf->dot11MeshRetryTimeout = nconf->dot11MeshRetryTimeout;
1710         if (_chg_mesh_attr(NL80211_MESHCONF_CONFIRM_TIMEOUT, mask))
1711                 conf->dot11MeshConfirmTimeout = nconf->dot11MeshConfirmTimeout;
1712         if (_chg_mesh_attr(NL80211_MESHCONF_HOLDING_TIMEOUT, mask))
1713                 conf->dot11MeshHoldingTimeout = nconf->dot11MeshHoldingTimeout;
1714         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_PEER_LINKS, mask))
1715                 conf->dot11MeshMaxPeerLinks = nconf->dot11MeshMaxPeerLinks;
1716         if (_chg_mesh_attr(NL80211_MESHCONF_MAX_RETRIES, mask))
1717                 conf->dot11MeshMaxRetries = nconf->dot11MeshMaxRetries;
1718         if (_chg_mesh_attr(NL80211_MESHCONF_TTL, mask))
1719                 conf->dot11MeshTTL = nconf->dot11MeshTTL;
1720         if (_chg_mesh_attr(NL80211_MESHCONF_ELEMENT_TTL, mask))
1721                 conf->element_ttl = nconf->element_ttl;
1722         if (_chg_mesh_attr(NL80211_MESHCONF_AUTO_OPEN_PLINKS, mask)) {
1723                 if (ifmsh->user_mpm)
1724                         return -EBUSY;
1725                 conf->auto_open_plinks = nconf->auto_open_plinks;
1726         }
1727         if (_chg_mesh_attr(NL80211_MESHCONF_SYNC_OFFSET_MAX_NEIGHBOR, mask))
1728                 conf->dot11MeshNbrOffsetMaxNeighbor =
1729                         nconf->dot11MeshNbrOffsetMaxNeighbor;
1730         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_MAX_PREQ_RETRIES, mask))
1731                 conf->dot11MeshHWMPmaxPREQretries =
1732                         nconf->dot11MeshHWMPmaxPREQretries;
1733         if (_chg_mesh_attr(NL80211_MESHCONF_PATH_REFRESH_TIME, mask))
1734                 conf->path_refresh_time = nconf->path_refresh_time;
1735         if (_chg_mesh_attr(NL80211_MESHCONF_MIN_DISCOVERY_TIMEOUT, mask))
1736                 conf->min_discovery_timeout = nconf->min_discovery_timeout;
1737         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ACTIVE_PATH_TIMEOUT, mask))
1738                 conf->dot11MeshHWMPactivePathTimeout =
1739                         nconf->dot11MeshHWMPactivePathTimeout;
1740         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PREQ_MIN_INTERVAL, mask))
1741                 conf->dot11MeshHWMPpreqMinInterval =
1742                         nconf->dot11MeshHWMPpreqMinInterval;
1743         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PERR_MIN_INTERVAL, mask))
1744                 conf->dot11MeshHWMPperrMinInterval =
1745                         nconf->dot11MeshHWMPperrMinInterval;
1746         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_NET_DIAM_TRVS_TIME,
1747                            mask))
1748                 conf->dot11MeshHWMPnetDiameterTraversalTime =
1749                         nconf->dot11MeshHWMPnetDiameterTraversalTime;
1750         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOTMODE, mask)) {
1751                 conf->dot11MeshHWMPRootMode = nconf->dot11MeshHWMPRootMode;
1752                 ieee80211_mesh_root_setup(ifmsh);
1753         }
1754         if (_chg_mesh_attr(NL80211_MESHCONF_GATE_ANNOUNCEMENTS, mask)) {
1755                 /* our current gate announcement implementation rides on root
1756                  * announcements, so require this ifmsh to also be a root node
1757                  * */
1758                 if (nconf->dot11MeshGateAnnouncementProtocol &&
1759                     !(conf->dot11MeshHWMPRootMode > IEEE80211_ROOTMODE_ROOT)) {
1760                         conf->dot11MeshHWMPRootMode = IEEE80211_PROACTIVE_RANN;
1761                         ieee80211_mesh_root_setup(ifmsh);
1762                 }
1763                 conf->dot11MeshGateAnnouncementProtocol =
1764                         nconf->dot11MeshGateAnnouncementProtocol;
1765         }
1766         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_RANN_INTERVAL, mask))
1767                 conf->dot11MeshHWMPRannInterval =
1768                         nconf->dot11MeshHWMPRannInterval;
1769         if (_chg_mesh_attr(NL80211_MESHCONF_FORWARDING, mask))
1770                 conf->dot11MeshForwarding = nconf->dot11MeshForwarding;
1771         if (_chg_mesh_attr(NL80211_MESHCONF_RSSI_THRESHOLD, mask)) {
1772                 /* our RSSI threshold implementation is supported only for
1773                  * devices that report signal in dBm.
1774                  */
1775                 if (!ieee80211_hw_check(&sdata->local->hw, SIGNAL_DBM))
1776                         return -ENOTSUPP;
1777                 conf->rssi_threshold = nconf->rssi_threshold;
1778         }
1779         if (_chg_mesh_attr(NL80211_MESHCONF_HT_OPMODE, mask)) {
1780                 conf->ht_opmode = nconf->ht_opmode;
1781                 sdata->vif.bss_conf.ht_operation_mode = nconf->ht_opmode;
1782                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_HT);
1783         }
1784         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_PATH_TO_ROOT_TIMEOUT, mask))
1785                 conf->dot11MeshHWMPactivePathToRootTimeout =
1786                         nconf->dot11MeshHWMPactivePathToRootTimeout;
1787         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_ROOT_INTERVAL, mask))
1788                 conf->dot11MeshHWMProotInterval =
1789                         nconf->dot11MeshHWMProotInterval;
1790         if (_chg_mesh_attr(NL80211_MESHCONF_HWMP_CONFIRMATION_INTERVAL, mask))
1791                 conf->dot11MeshHWMPconfirmationInterval =
1792                         nconf->dot11MeshHWMPconfirmationInterval;
1793         if (_chg_mesh_attr(NL80211_MESHCONF_POWER_MODE, mask)) {
1794                 conf->power_mode = nconf->power_mode;
1795                 ieee80211_mps_local_status_update(sdata);
1796         }
1797         if (_chg_mesh_attr(NL80211_MESHCONF_AWAKE_WINDOW, mask))
1798                 conf->dot11MeshAwakeWindowDuration =
1799                         nconf->dot11MeshAwakeWindowDuration;
1800         if (_chg_mesh_attr(NL80211_MESHCONF_PLINK_TIMEOUT, mask))
1801                 conf->plink_timeout = nconf->plink_timeout;
1802         ieee80211_mbss_info_change_notify(sdata, BSS_CHANGED_BEACON);
1803         return 0;
1804 }
1805
1806 static int ieee80211_join_mesh(struct wiphy *wiphy, struct net_device *dev,
1807                                const struct mesh_config *conf,
1808                                const struct mesh_setup *setup)
1809 {
1810         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1811         struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
1812         int err;
1813
1814         memcpy(&ifmsh->mshcfg, conf, sizeof(struct mesh_config));
1815         err = copy_mesh_setup(ifmsh, setup);
1816         if (err)
1817                 return err;
1818
1819         /* can mesh use other SMPS modes? */
1820         sdata->smps_mode = IEEE80211_SMPS_OFF;
1821         sdata->needed_rx_chains = sdata->local->rx_chains;
1822
1823         mutex_lock(&sdata->local->mtx);
1824         err = ieee80211_vif_use_channel(sdata, &setup->chandef,
1825                                         IEEE80211_CHANCTX_SHARED);
1826         mutex_unlock(&sdata->local->mtx);
1827         if (err)
1828                 return err;
1829
1830         return ieee80211_start_mesh(sdata);
1831 }
1832
1833 static int ieee80211_leave_mesh(struct wiphy *wiphy, struct net_device *dev)
1834 {
1835         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1836
1837         ieee80211_stop_mesh(sdata);
1838         mutex_lock(&sdata->local->mtx);
1839         ieee80211_vif_release_channel(sdata);
1840         mutex_unlock(&sdata->local->mtx);
1841
1842         return 0;
1843 }
1844 #endif
1845
1846 static int ieee80211_change_bss(struct wiphy *wiphy,
1847                                 struct net_device *dev,
1848                                 struct bss_parameters *params)
1849 {
1850         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1851         enum nl80211_band band;
1852         u32 changed = 0;
1853
1854         if (!sdata_dereference(sdata->u.ap.beacon, sdata))
1855                 return -ENOENT;
1856
1857         band = ieee80211_get_sdata_band(sdata);
1858
1859         if (params->use_cts_prot >= 0) {
1860                 sdata->vif.bss_conf.use_cts_prot = params->use_cts_prot;
1861                 changed |= BSS_CHANGED_ERP_CTS_PROT;
1862         }
1863         if (params->use_short_preamble >= 0) {
1864                 sdata->vif.bss_conf.use_short_preamble =
1865                         params->use_short_preamble;
1866                 changed |= BSS_CHANGED_ERP_PREAMBLE;
1867         }
1868
1869         if (!sdata->vif.bss_conf.use_short_slot &&
1870             band == NL80211_BAND_5GHZ) {
1871                 sdata->vif.bss_conf.use_short_slot = true;
1872                 changed |= BSS_CHANGED_ERP_SLOT;
1873         }
1874
1875         if (params->use_short_slot_time >= 0) {
1876                 sdata->vif.bss_conf.use_short_slot =
1877                         params->use_short_slot_time;
1878                 changed |= BSS_CHANGED_ERP_SLOT;
1879         }
1880
1881         if (params->basic_rates) {
1882                 ieee80211_parse_bitrates(&sdata->vif.bss_conf.chandef,
1883                                          wiphy->bands[band],
1884                                          params->basic_rates,
1885                                          params->basic_rates_len,
1886                                          &sdata->vif.bss_conf.basic_rates);
1887                 changed |= BSS_CHANGED_BASIC_RATES;
1888         }
1889
1890         if (params->ap_isolate >= 0) {
1891                 if (params->ap_isolate)
1892                         sdata->flags |= IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1893                 else
1894                         sdata->flags &= ~IEEE80211_SDATA_DONT_BRIDGE_PACKETS;
1895                 ieee80211_check_fast_rx_iface(sdata);
1896         }
1897
1898         if (params->ht_opmode >= 0) {
1899                 sdata->vif.bss_conf.ht_operation_mode =
1900                         (u16) params->ht_opmode;
1901                 changed |= BSS_CHANGED_HT;
1902         }
1903
1904         if (params->p2p_ctwindow >= 0) {
1905                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &=
1906                                         ~IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
1907                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
1908                         params->p2p_ctwindow & IEEE80211_P2P_OPPPS_CTWINDOW_MASK;
1909                 changed |= BSS_CHANGED_P2P_PS;
1910         }
1911
1912         if (params->p2p_opp_ps > 0) {
1913                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow |=
1914                                         IEEE80211_P2P_OPPPS_ENABLE_BIT;
1915                 changed |= BSS_CHANGED_P2P_PS;
1916         } else if (params->p2p_opp_ps == 0) {
1917                 sdata->vif.bss_conf.p2p_noa_attr.oppps_ctwindow &=
1918                                         ~IEEE80211_P2P_OPPPS_ENABLE_BIT;
1919                 changed |= BSS_CHANGED_P2P_PS;
1920         }
1921
1922         ieee80211_bss_info_change_notify(sdata, changed);
1923
1924         return 0;
1925 }
1926
1927 static int ieee80211_set_txq_params(struct wiphy *wiphy,
1928                                     struct net_device *dev,
1929                                     struct ieee80211_txq_params *params)
1930 {
1931         struct ieee80211_local *local = wiphy_priv(wiphy);
1932         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
1933         struct ieee80211_tx_queue_params p;
1934
1935         if (!local->ops->conf_tx)
1936                 return -EOPNOTSUPP;
1937
1938         if (local->hw.queues < IEEE80211_NUM_ACS)
1939                 return -EOPNOTSUPP;
1940
1941         memset(&p, 0, sizeof(p));
1942         p.aifs = params->aifs;
1943         p.cw_max = params->cwmax;
1944         p.cw_min = params->cwmin;
1945         p.txop = params->txop;
1946
1947         /*
1948          * Setting tx queue params disables u-apsd because it's only
1949          * called in master mode.
1950          */
1951         p.uapsd = false;
1952
1953         sdata->tx_conf[params->ac] = p;
1954         if (drv_conf_tx(local, sdata, params->ac, &p)) {
1955                 wiphy_debug(local->hw.wiphy,
1956                             "failed to set TX queue parameters for AC %d\n",
1957                             params->ac);
1958                 return -EINVAL;
1959         }
1960
1961         ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_QOS);
1962
1963         return 0;
1964 }
1965
1966 #ifdef CONFIG_PM
1967 static int ieee80211_suspend(struct wiphy *wiphy,
1968                              struct cfg80211_wowlan *wowlan)
1969 {
1970         return __ieee80211_suspend(wiphy_priv(wiphy), wowlan);
1971 }
1972
1973 static int ieee80211_resume(struct wiphy *wiphy)
1974 {
1975         return __ieee80211_resume(wiphy_priv(wiphy));
1976 }
1977 #else
1978 #define ieee80211_suspend NULL
1979 #define ieee80211_resume NULL
1980 #endif
1981
1982 static int ieee80211_scan(struct wiphy *wiphy,
1983                           struct cfg80211_scan_request *req)
1984 {
1985         struct ieee80211_sub_if_data *sdata;
1986
1987         sdata = IEEE80211_WDEV_TO_SUB_IF(req->wdev);
1988
1989         switch (ieee80211_vif_type_p2p(&sdata->vif)) {
1990         case NL80211_IFTYPE_STATION:
1991         case NL80211_IFTYPE_ADHOC:
1992         case NL80211_IFTYPE_MESH_POINT:
1993         case NL80211_IFTYPE_P2P_CLIENT:
1994         case NL80211_IFTYPE_P2P_DEVICE:
1995                 break;
1996         case NL80211_IFTYPE_P2P_GO:
1997                 if (sdata->local->ops->hw_scan)
1998                         break;
1999                 /*
2000                  * FIXME: implement NoA while scanning in software,
2001                  * for now fall through to allow scanning only when
2002                  * beaconing hasn't been configured yet
2003                  */
2004         case NL80211_IFTYPE_AP:
2005                 /*
2006                  * If the scan has been forced (and the driver supports
2007                  * forcing), don't care about being beaconing already.
2008                  * This will create problems to the attached stations (e.g. all
2009                  * the  frames sent while scanning on other channel will be
2010                  * lost)
2011                  */
2012                 if (sdata->u.ap.beacon &&
2013                     (!(wiphy->features & NL80211_FEATURE_AP_SCAN) ||
2014                      !(req->flags & NL80211_SCAN_FLAG_AP)))
2015                         return -EOPNOTSUPP;
2016                 break;
2017         default:
2018                 return -EOPNOTSUPP;
2019         }
2020
2021         return ieee80211_request_scan(sdata, req);
2022 }
2023
2024 static void ieee80211_abort_scan(struct wiphy *wiphy, struct wireless_dev *wdev)
2025 {
2026         ieee80211_scan_cancel(wiphy_priv(wiphy));
2027 }
2028
2029 static int
2030 ieee80211_sched_scan_start(struct wiphy *wiphy,
2031                            struct net_device *dev,
2032                            struct cfg80211_sched_scan_request *req)
2033 {
2034         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2035
2036         if (!sdata->local->ops->sched_scan_start)
2037                 return -EOPNOTSUPP;
2038
2039         return ieee80211_request_sched_scan_start(sdata, req);
2040 }
2041
2042 static int
2043 ieee80211_sched_scan_stop(struct wiphy *wiphy, struct net_device *dev)
2044 {
2045         struct ieee80211_local *local = wiphy_priv(wiphy);
2046
2047         if (!local->ops->sched_scan_stop)
2048                 return -EOPNOTSUPP;
2049
2050         return ieee80211_request_sched_scan_stop(local);
2051 }
2052
2053 static int ieee80211_auth(struct wiphy *wiphy, struct net_device *dev,
2054                           struct cfg80211_auth_request *req)
2055 {
2056         return ieee80211_mgd_auth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2057 }
2058
2059 static int ieee80211_assoc(struct wiphy *wiphy, struct net_device *dev,
2060                            struct cfg80211_assoc_request *req)
2061 {
2062         return ieee80211_mgd_assoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2063 }
2064
2065 static int ieee80211_deauth(struct wiphy *wiphy, struct net_device *dev,
2066                             struct cfg80211_deauth_request *req)
2067 {
2068         return ieee80211_mgd_deauth(IEEE80211_DEV_TO_SUB_IF(dev), req);
2069 }
2070
2071 static int ieee80211_disassoc(struct wiphy *wiphy, struct net_device *dev,
2072                               struct cfg80211_disassoc_request *req)
2073 {
2074         return ieee80211_mgd_disassoc(IEEE80211_DEV_TO_SUB_IF(dev), req);
2075 }
2076
2077 static int ieee80211_join_ibss(struct wiphy *wiphy, struct net_device *dev,
2078                                struct cfg80211_ibss_params *params)
2079 {
2080         return ieee80211_ibss_join(IEEE80211_DEV_TO_SUB_IF(dev), params);
2081 }
2082
2083 static int ieee80211_leave_ibss(struct wiphy *wiphy, struct net_device *dev)
2084 {
2085         return ieee80211_ibss_leave(IEEE80211_DEV_TO_SUB_IF(dev));
2086 }
2087
2088 static int ieee80211_join_ocb(struct wiphy *wiphy, struct net_device *dev,
2089                               struct ocb_setup *setup)
2090 {
2091         return ieee80211_ocb_join(IEEE80211_DEV_TO_SUB_IF(dev), setup);
2092 }
2093
2094 static int ieee80211_leave_ocb(struct wiphy *wiphy, struct net_device *dev)
2095 {
2096         return ieee80211_ocb_leave(IEEE80211_DEV_TO_SUB_IF(dev));
2097 }
2098
2099 static int ieee80211_set_mcast_rate(struct wiphy *wiphy, struct net_device *dev,
2100                                     int rate[NUM_NL80211_BANDS])
2101 {
2102         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2103
2104         memcpy(sdata->vif.bss_conf.mcast_rate, rate,
2105                sizeof(int) * NUM_NL80211_BANDS);
2106
2107         return 0;
2108 }
2109
2110 static int ieee80211_set_wiphy_params(struct wiphy *wiphy, u32 changed)
2111 {
2112         struct ieee80211_local *local = wiphy_priv(wiphy);
2113         int err;
2114
2115         if (changed & WIPHY_PARAM_FRAG_THRESHOLD) {
2116                 ieee80211_check_fast_xmit_all(local);
2117
2118                 err = drv_set_frag_threshold(local, wiphy->frag_threshold);
2119
2120                 if (err) {
2121                         ieee80211_check_fast_xmit_all(local);
2122                         return err;
2123                 }
2124         }
2125
2126         if ((changed & WIPHY_PARAM_COVERAGE_CLASS) ||
2127             (changed & WIPHY_PARAM_DYN_ACK)) {
2128                 s16 coverage_class;
2129
2130                 coverage_class = changed & WIPHY_PARAM_COVERAGE_CLASS ?
2131                                         wiphy->coverage_class : -1;
2132                 err = drv_set_coverage_class(local, coverage_class);
2133
2134                 if (err)
2135                         return err;
2136         }
2137
2138         if (changed & WIPHY_PARAM_RTS_THRESHOLD) {
2139                 err = drv_set_rts_threshold(local, wiphy->rts_threshold);
2140
2141                 if (err)
2142                         return err;
2143         }
2144
2145         if (changed & WIPHY_PARAM_RETRY_SHORT) {
2146                 if (wiphy->retry_short > IEEE80211_MAX_TX_RETRY)
2147                         return -EINVAL;
2148                 local->hw.conf.short_frame_max_tx_count = wiphy->retry_short;
2149         }
2150         if (changed & WIPHY_PARAM_RETRY_LONG) {
2151                 if (wiphy->retry_long > IEEE80211_MAX_TX_RETRY)
2152                         return -EINVAL;
2153                 local->hw.conf.long_frame_max_tx_count = wiphy->retry_long;
2154         }
2155         if (changed &
2156             (WIPHY_PARAM_RETRY_SHORT | WIPHY_PARAM_RETRY_LONG))
2157                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_RETRY_LIMITS);
2158
2159         return 0;
2160 }
2161
2162 static int ieee80211_set_tx_power(struct wiphy *wiphy,
2163                                   struct wireless_dev *wdev,
2164                                   enum nl80211_tx_power_setting type, int mbm)
2165 {
2166         struct ieee80211_local *local = wiphy_priv(wiphy);
2167         struct ieee80211_sub_if_data *sdata;
2168         enum nl80211_tx_power_setting txp_type = type;
2169         bool update_txp_type = false;
2170
2171         if (wdev) {
2172                 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2173
2174                 switch (type) {
2175                 case NL80211_TX_POWER_AUTOMATIC:
2176                         sdata->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2177                         txp_type = NL80211_TX_POWER_LIMITED;
2178                         break;
2179                 case NL80211_TX_POWER_LIMITED:
2180                 case NL80211_TX_POWER_FIXED:
2181                         if (mbm < 0 || (mbm % 100))
2182                                 return -EOPNOTSUPP;
2183                         sdata->user_power_level = MBM_TO_DBM(mbm);
2184                         break;
2185                 }
2186
2187                 if (txp_type != sdata->vif.bss_conf.txpower_type) {
2188                         update_txp_type = true;
2189                         sdata->vif.bss_conf.txpower_type = txp_type;
2190                 }
2191
2192                 ieee80211_recalc_txpower(sdata, update_txp_type);
2193
2194                 return 0;
2195         }
2196
2197         switch (type) {
2198         case NL80211_TX_POWER_AUTOMATIC:
2199                 local->user_power_level = IEEE80211_UNSET_POWER_LEVEL;
2200                 txp_type = NL80211_TX_POWER_LIMITED;
2201                 break;
2202         case NL80211_TX_POWER_LIMITED:
2203         case NL80211_TX_POWER_FIXED:
2204                 if (mbm < 0 || (mbm % 100))
2205                         return -EOPNOTSUPP;
2206                 local->user_power_level = MBM_TO_DBM(mbm);
2207                 break;
2208         }
2209
2210         mutex_lock(&local->iflist_mtx);
2211         list_for_each_entry(sdata, &local->interfaces, list) {
2212                 sdata->user_power_level = local->user_power_level;
2213                 if (txp_type != sdata->vif.bss_conf.txpower_type)
2214                         update_txp_type = true;
2215                 sdata->vif.bss_conf.txpower_type = txp_type;
2216         }
2217         list_for_each_entry(sdata, &local->interfaces, list)
2218                 ieee80211_recalc_txpower(sdata, update_txp_type);
2219         mutex_unlock(&local->iflist_mtx);
2220
2221         return 0;
2222 }
2223
2224 static int ieee80211_get_tx_power(struct wiphy *wiphy,
2225                                   struct wireless_dev *wdev,
2226                                   int *dbm)
2227 {
2228         struct ieee80211_local *local = wiphy_priv(wiphy);
2229         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2230
2231         if (local->ops->get_txpower)
2232                 return drv_get_txpower(local, sdata, dbm);
2233
2234         if (!local->use_chanctx)
2235                 *dbm = local->hw.conf.power_level;
2236         else
2237                 *dbm = sdata->vif.bss_conf.txpower;
2238
2239         return 0;
2240 }
2241
2242 static int ieee80211_set_wds_peer(struct wiphy *wiphy, struct net_device *dev,
2243                                   const u8 *addr)
2244 {
2245         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2246
2247         memcpy(&sdata->u.wds.remote_addr, addr, ETH_ALEN);
2248
2249         return 0;
2250 }
2251
2252 static void ieee80211_rfkill_poll(struct wiphy *wiphy)
2253 {
2254         struct ieee80211_local *local = wiphy_priv(wiphy);
2255
2256         drv_rfkill_poll(local);
2257 }
2258
2259 #ifdef CONFIG_NL80211_TESTMODE
2260 static int ieee80211_testmode_cmd(struct wiphy *wiphy,
2261                                   struct wireless_dev *wdev,
2262                                   void *data, int len)
2263 {
2264         struct ieee80211_local *local = wiphy_priv(wiphy);
2265         struct ieee80211_vif *vif = NULL;
2266
2267         if (!local->ops->testmode_cmd)
2268                 return -EOPNOTSUPP;
2269
2270         if (wdev) {
2271                 struct ieee80211_sub_if_data *sdata;
2272
2273                 sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
2274                 if (sdata->flags & IEEE80211_SDATA_IN_DRIVER)
2275                         vif = &sdata->vif;
2276         }
2277
2278         return local->ops->testmode_cmd(&local->hw, vif, data, len);
2279 }
2280
2281 static int ieee80211_testmode_dump(struct wiphy *wiphy,
2282                                    struct sk_buff *skb,
2283                                    struct netlink_callback *cb,
2284                                    void *data, int len)
2285 {
2286         struct ieee80211_local *local = wiphy_priv(wiphy);
2287
2288         if (!local->ops->testmode_dump)
2289                 return -EOPNOTSUPP;
2290
2291         return local->ops->testmode_dump(&local->hw, skb, cb, data, len);
2292 }
2293 #endif
2294
2295 int __ieee80211_request_smps_ap(struct ieee80211_sub_if_data *sdata,
2296                                 enum ieee80211_smps_mode smps_mode)
2297 {
2298         struct sta_info *sta;
2299         enum ieee80211_smps_mode old_req;
2300
2301         if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_AP))
2302                 return -EINVAL;
2303
2304         if (sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
2305                 return 0;
2306
2307         old_req = sdata->u.ap.req_smps;
2308         sdata->u.ap.req_smps = smps_mode;
2309
2310         /* AUTOMATIC doesn't mean much for AP - don't allow it */
2311         if (old_req == smps_mode ||
2312             smps_mode == IEEE80211_SMPS_AUTOMATIC)
2313                 return 0;
2314
2315          /* If no associated stations, there's no need to do anything */
2316         if (!atomic_read(&sdata->u.ap.num_mcast_sta)) {
2317                 sdata->smps_mode = smps_mode;
2318                 ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps);
2319                 return 0;
2320         }
2321
2322         ht_dbg(sdata,
2323                "SMPS %d requested in AP mode, sending Action frame to %d stations\n",
2324                smps_mode, atomic_read(&sdata->u.ap.num_mcast_sta));
2325
2326         mutex_lock(&sdata->local->sta_mtx);
2327         list_for_each_entry(sta, &sdata->local->sta_list, list) {
2328                 /*
2329                  * Only stations associated to our AP and
2330                  * associated VLANs
2331                  */
2332                 if (sta->sdata->bss != &sdata->u.ap)
2333                         continue;
2334
2335                 /* This station doesn't support MIMO - skip it */
2336                 if (sta_info_tx_streams(sta) == 1)
2337                         continue;
2338
2339                 /*
2340                  * Don't wake up a STA just to send the action frame
2341                  * unless we are getting more restrictive.
2342                  */
2343                 if (test_sta_flag(sta, WLAN_STA_PS_STA) &&
2344                     !ieee80211_smps_is_restrictive(sta->known_smps_mode,
2345                                                    smps_mode)) {
2346                         ht_dbg(sdata, "Won't send SMPS to sleeping STA %pM\n",
2347                                sta->sta.addr);
2348                         continue;
2349                 }
2350
2351                 /*
2352                  * If the STA is not authorized, wait until it gets
2353                  * authorized and the action frame will be sent then.
2354                  */
2355                 if (!test_sta_flag(sta, WLAN_STA_AUTHORIZED))
2356                         continue;
2357
2358                 ht_dbg(sdata, "Sending SMPS to %pM\n", sta->sta.addr);
2359                 ieee80211_send_smps_action(sdata, smps_mode, sta->sta.addr,
2360                                            sdata->vif.bss_conf.bssid);
2361         }
2362         mutex_unlock(&sdata->local->sta_mtx);
2363
2364         sdata->smps_mode = smps_mode;
2365         ieee80211_queue_work(&sdata->local->hw, &sdata->recalc_smps);
2366
2367         return 0;
2368 }
2369
2370 int __ieee80211_request_smps_mgd(struct ieee80211_sub_if_data *sdata,
2371                                  enum ieee80211_smps_mode smps_mode)
2372 {
2373         const u8 *ap;
2374         enum ieee80211_smps_mode old_req;
2375         int err;
2376         struct sta_info *sta;
2377         bool tdls_peer_found = false;
2378
2379         lockdep_assert_held(&sdata->wdev.mtx);
2380
2381         if (WARN_ON_ONCE(sdata->vif.type != NL80211_IFTYPE_STATION))
2382                 return -EINVAL;
2383
2384         old_req = sdata->u.mgd.req_smps;
2385         sdata->u.mgd.req_smps = smps_mode;
2386
2387         if (old_req == smps_mode &&
2388             smps_mode != IEEE80211_SMPS_AUTOMATIC)
2389                 return 0;
2390
2391         /*
2392          * If not associated, or current association is not an HT
2393          * association, there's no need to do anything, just store
2394          * the new value until we associate.
2395          */
2396         if (!sdata->u.mgd.associated ||
2397             sdata->vif.bss_conf.chandef.width == NL80211_CHAN_WIDTH_20_NOHT)
2398                 return 0;
2399
2400         ap = sdata->u.mgd.associated->bssid;
2401
2402         rcu_read_lock();
2403         list_for_each_entry_rcu(sta, &sdata->local->sta_list, list) {
2404                 if (!sta->sta.tdls || sta->sdata != sdata || !sta->uploaded ||
2405                     !test_sta_flag(sta, WLAN_STA_AUTHORIZED))
2406                         continue;
2407
2408                 tdls_peer_found = true;
2409                 break;
2410         }
2411         rcu_read_unlock();
2412
2413         if (smps_mode == IEEE80211_SMPS_AUTOMATIC) {
2414                 if (tdls_peer_found || !sdata->u.mgd.powersave)
2415                         smps_mode = IEEE80211_SMPS_OFF;
2416                 else
2417                         smps_mode = IEEE80211_SMPS_DYNAMIC;
2418         }
2419
2420         /* send SM PS frame to AP */
2421         err = ieee80211_send_smps_action(sdata, smps_mode,
2422                                          ap, ap);
2423         if (err)
2424                 sdata->u.mgd.req_smps = old_req;
2425         else if (smps_mode != IEEE80211_SMPS_OFF && tdls_peer_found)
2426                 ieee80211_teardown_tdls_peers(sdata);
2427
2428         return err;
2429 }
2430
2431 static int ieee80211_set_power_mgmt(struct wiphy *wiphy, struct net_device *dev,
2432                                     bool enabled, int timeout)
2433 {
2434         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2435         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2436
2437         if (sdata->vif.type != NL80211_IFTYPE_STATION)
2438                 return -EOPNOTSUPP;
2439
2440         if (!ieee80211_hw_check(&local->hw, SUPPORTS_PS))
2441                 return -EOPNOTSUPP;
2442
2443         if (enabled == sdata->u.mgd.powersave &&
2444             timeout == local->dynamic_ps_forced_timeout)
2445                 return 0;
2446
2447         sdata->u.mgd.powersave = enabled;
2448         local->dynamic_ps_forced_timeout = timeout;
2449
2450         /* no change, but if automatic follow powersave */
2451         sdata_lock(sdata);
2452         __ieee80211_request_smps_mgd(sdata, sdata->u.mgd.req_smps);
2453         sdata_unlock(sdata);
2454
2455         if (ieee80211_hw_check(&local->hw, SUPPORTS_DYNAMIC_PS))
2456                 ieee80211_hw_config(local, IEEE80211_CONF_CHANGE_PS);
2457
2458         ieee80211_recalc_ps(local);
2459         ieee80211_recalc_ps_vif(sdata);
2460
2461         return 0;
2462 }
2463
2464 static int ieee80211_set_cqm_rssi_config(struct wiphy *wiphy,
2465                                          struct net_device *dev,
2466                                          s32 rssi_thold, u32 rssi_hyst)
2467 {
2468         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2469         struct ieee80211_vif *vif = &sdata->vif;
2470         struct ieee80211_bss_conf *bss_conf = &vif->bss_conf;
2471
2472         if (rssi_thold == bss_conf->cqm_rssi_thold &&
2473             rssi_hyst == bss_conf->cqm_rssi_hyst)
2474                 return 0;
2475
2476         if (sdata->vif.driver_flags & IEEE80211_VIF_BEACON_FILTER &&
2477             !(sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI))
2478                 return -EOPNOTSUPP;
2479
2480         bss_conf->cqm_rssi_thold = rssi_thold;
2481         bss_conf->cqm_rssi_hyst = rssi_hyst;
2482         sdata->u.mgd.last_cqm_event_signal = 0;
2483
2484         /* tell the driver upon association, unless already associated */
2485         if (sdata->u.mgd.associated &&
2486             sdata->vif.driver_flags & IEEE80211_VIF_SUPPORTS_CQM_RSSI)
2487                 ieee80211_bss_info_change_notify(sdata, BSS_CHANGED_CQM);
2488
2489         return 0;
2490 }
2491
2492 static int ieee80211_set_bitrate_mask(struct wiphy *wiphy,
2493                                       struct net_device *dev,
2494                                       const u8 *addr,
2495                                       const struct cfg80211_bitrate_mask *mask)
2496 {
2497         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2498         struct ieee80211_local *local = wdev_priv(dev->ieee80211_ptr);
2499         int i, ret;
2500
2501         if (!ieee80211_sdata_running(sdata))
2502                 return -ENETDOWN;
2503
2504         if (ieee80211_hw_check(&local->hw, HAS_RATE_CONTROL)) {
2505                 ret = drv_set_bitrate_mask(local, sdata, mask);
2506                 if (ret)
2507                         return ret;
2508         }
2509
2510         for (i = 0; i < NUM_NL80211_BANDS; i++) {
2511                 struct ieee80211_supported_band *sband = wiphy->bands[i];
2512                 int j;
2513
2514                 sdata->rc_rateidx_mask[i] = mask->control[i].legacy;
2515                 memcpy(sdata->rc_rateidx_mcs_mask[i], mask->control[i].ht_mcs,
2516                        sizeof(mask->control[i].ht_mcs));
2517                 memcpy(sdata->rc_rateidx_vht_mcs_mask[i],
2518                        mask->control[i].vht_mcs,
2519                        sizeof(mask->control[i].vht_mcs));
2520
2521                 sdata->rc_has_mcs_mask[i] = false;
2522                 sdata->rc_has_vht_mcs_mask[i] = false;
2523                 if (!sband)
2524                         continue;
2525
2526                 for (j = 0; j < IEEE80211_HT_MCS_MASK_LEN; j++) {
2527                         if (~sdata->rc_rateidx_mcs_mask[i][j]) {
2528                                 sdata->rc_has_mcs_mask[i] = true;
2529                                 break;
2530                         }
2531                 }
2532
2533                 for (j = 0; j < NL80211_VHT_NSS_MAX; j++) {
2534                         if (~sdata->rc_rateidx_vht_mcs_mask[i][j]) {
2535                                 sdata->rc_has_vht_mcs_mask[i] = true;
2536                                 break;
2537                         }
2538                 }
2539         }
2540
2541         return 0;
2542 }
2543
2544 static int ieee80211_start_radar_detection(struct wiphy *wiphy,
2545                                            struct net_device *dev,
2546                                            struct cfg80211_chan_def *chandef,
2547                                            u32 cac_time_ms)
2548 {
2549         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2550         struct ieee80211_local *local = sdata->local;
2551         int err;
2552
2553         mutex_lock(&local->mtx);
2554         if (!list_empty(&local->roc_list) || local->scanning) {
2555                 err = -EBUSY;
2556                 goto out_unlock;
2557         }
2558
2559         /* whatever, but channel contexts should not complain about that one */
2560         sdata->smps_mode = IEEE80211_SMPS_OFF;
2561         sdata->needed_rx_chains = local->rx_chains;
2562
2563         err = ieee80211_vif_use_channel(sdata, chandef,
2564                                         IEEE80211_CHANCTX_SHARED);
2565         if (err)
2566                 goto out_unlock;
2567
2568         ieee80211_queue_delayed_work(&sdata->local->hw,
2569                                      &sdata->dfs_cac_timer_work,
2570                                      msecs_to_jiffies(cac_time_ms));
2571
2572  out_unlock:
2573         mutex_unlock(&local->mtx);
2574         return err;
2575 }
2576
2577 static struct cfg80211_beacon_data *
2578 cfg80211_beacon_dup(struct cfg80211_beacon_data *beacon)
2579 {
2580         struct cfg80211_beacon_data *new_beacon;
2581         u8 *pos;
2582         int len;
2583
2584         len = beacon->head_len + beacon->tail_len + beacon->beacon_ies_len +
2585               beacon->proberesp_ies_len + beacon->assocresp_ies_len +
2586               beacon->probe_resp_len;
2587
2588         new_beacon = kzalloc(sizeof(*new_beacon) + len, GFP_KERNEL);
2589         if (!new_beacon)
2590                 return NULL;
2591
2592         pos = (u8 *)(new_beacon + 1);
2593         if (beacon->head_len) {
2594                 new_beacon->head_len = beacon->head_len;
2595                 new_beacon->head = pos;
2596                 memcpy(pos, beacon->head, beacon->head_len);
2597                 pos += beacon->head_len;
2598         }
2599         if (beacon->tail_len) {
2600                 new_beacon->tail_len = beacon->tail_len;
2601                 new_beacon->tail = pos;
2602                 memcpy(pos, beacon->tail, beacon->tail_len);
2603                 pos += beacon->tail_len;
2604         }
2605         if (beacon->beacon_ies_len) {
2606                 new_beacon->beacon_ies_len = beacon->beacon_ies_len;
2607                 new_beacon->beacon_ies = pos;
2608                 memcpy(pos, beacon->beacon_ies, beacon->beacon_ies_len);
2609                 pos += beacon->beacon_ies_len;
2610         }
2611         if (beacon->proberesp_ies_len) {
2612                 new_beacon->proberesp_ies_len = beacon->proberesp_ies_len;
2613                 new_beacon->proberesp_ies = pos;
2614                 memcpy(pos, beacon->proberesp_ies, beacon->proberesp_ies_len);
2615                 pos += beacon->proberesp_ies_len;
2616         }
2617         if (beacon->assocresp_ies_len) {
2618                 new_beacon->assocresp_ies_len = beacon->assocresp_ies_len;
2619                 new_beacon->assocresp_ies = pos;
2620                 memcpy(pos, beacon->assocresp_ies, beacon->assocresp_ies_len);
2621                 pos += beacon->assocresp_ies_len;
2622         }
2623         if (beacon->probe_resp_len) {
2624                 new_beacon->probe_resp_len = beacon->probe_resp_len;
2625                 beacon->probe_resp = pos;
2626                 memcpy(pos, beacon->probe_resp, beacon->probe_resp_len);
2627                 pos += beacon->probe_resp_len;
2628         }
2629
2630         return new_beacon;
2631 }
2632
2633 void ieee80211_csa_finish(struct ieee80211_vif *vif)
2634 {
2635         struct ieee80211_sub_if_data *sdata = vif_to_sdata(vif);
2636
2637         ieee80211_queue_work(&sdata->local->hw,
2638                              &sdata->csa_finalize_work);
2639 }
2640 EXPORT_SYMBOL(ieee80211_csa_finish);
2641
2642 static int ieee80211_set_after_csa_beacon(struct ieee80211_sub_if_data *sdata,
2643                                           u32 *changed)
2644 {
2645         int err;
2646
2647         switch (sdata->vif.type) {
2648         case NL80211_IFTYPE_AP:
2649                 err = ieee80211_assign_beacon(sdata, sdata->u.ap.next_beacon,
2650                                               NULL);
2651                 kfree(sdata->u.ap.next_beacon);
2652                 sdata->u.ap.next_beacon = NULL;
2653
2654                 if (err < 0)
2655                         return err;
2656                 *changed |= err;
2657                 break;
2658         case NL80211_IFTYPE_ADHOC:
2659                 err = ieee80211_ibss_finish_csa(sdata);
2660                 if (err < 0)
2661                         return err;
2662                 *changed |= err;
2663                 break;
2664 #ifdef CONFIG_MAC80211_MESH
2665         case NL80211_IFTYPE_MESH_POINT:
2666                 err = ieee80211_mesh_finish_csa(sdata);
2667                 if (err < 0)
2668                         return err;
2669                 *changed |= err;
2670                 break;
2671 #endif
2672         default:
2673                 WARN_ON(1);
2674                 return -EINVAL;
2675         }
2676
2677         return 0;
2678 }
2679
2680 static int __ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata)
2681 {
2682         struct ieee80211_local *local = sdata->local;
2683         u32 changed = 0;
2684         int err;
2685
2686         sdata_assert_lock(sdata);
2687         lockdep_assert_held(&local->mtx);
2688         lockdep_assert_held(&local->chanctx_mtx);
2689
2690         /*
2691          * using reservation isn't immediate as it may be deferred until later
2692          * with multi-vif. once reservation is complete it will re-schedule the
2693          * work with no reserved_chanctx so verify chandef to check if it
2694          * completed successfully
2695          */
2696
2697         if (sdata->reserved_chanctx) {
2698                 /*
2699                  * with multi-vif csa driver may call ieee80211_csa_finish()
2700                  * many times while waiting for other interfaces to use their
2701                  * reservations
2702                  */
2703                 if (sdata->reserved_ready)
2704                         return 0;
2705
2706                 return ieee80211_vif_use_reserved_context(sdata);
2707         }
2708
2709         if (!cfg80211_chandef_identical(&sdata->vif.bss_conf.chandef,
2710                                         &sdata->csa_chandef))
2711                 return -EINVAL;
2712
2713         sdata->vif.csa_active = false;
2714
2715         err = ieee80211_set_after_csa_beacon(sdata, &changed);
2716         if (err)
2717                 return err;
2718
2719         ieee80211_bss_info_change_notify(sdata, changed);
2720
2721         if (sdata->csa_block_tx) {
2722                 ieee80211_wake_vif_queues(local, sdata,
2723                                           IEEE80211_QUEUE_STOP_REASON_CSA);
2724                 sdata->csa_block_tx = false;
2725         }
2726
2727         err = drv_post_channel_switch(sdata);
2728         if (err)
2729                 return err;
2730
2731         cfg80211_ch_switch_notify(sdata->dev, &sdata->csa_chandef);
2732
2733         return 0;
2734 }
2735
2736 static void ieee80211_csa_finalize(struct ieee80211_sub_if_data *sdata)
2737 {
2738         if (__ieee80211_csa_finalize(sdata)) {
2739                 sdata_info(sdata, "failed to finalize CSA, disconnecting\n");
2740                 cfg80211_stop_iface(sdata->local->hw.wiphy, &sdata->wdev,
2741                                     GFP_KERNEL);
2742         }
2743 }
2744
2745 void ieee80211_csa_finalize_work(struct work_struct *work)
2746 {
2747         struct ieee80211_sub_if_data *sdata =
2748                 container_of(work, struct ieee80211_sub_if_data,
2749                              csa_finalize_work);
2750         struct ieee80211_local *local = sdata->local;
2751
2752         sdata_lock(sdata);
2753         mutex_lock(&local->mtx);
2754         mutex_lock(&local->chanctx_mtx);
2755
2756         /* AP might have been stopped while waiting for the lock. */
2757         if (!sdata->vif.csa_active)
2758                 goto unlock;
2759
2760         if (!ieee80211_sdata_running(sdata))
2761                 goto unlock;
2762
2763         ieee80211_csa_finalize(sdata);
2764
2765 unlock:
2766         mutex_unlock(&local->chanctx_mtx);
2767         mutex_unlock(&local->mtx);
2768         sdata_unlock(sdata);
2769 }
2770
2771 static int ieee80211_set_csa_beacon(struct ieee80211_sub_if_data *sdata,
2772                                     struct cfg80211_csa_settings *params,
2773                                     u32 *changed)
2774 {
2775         struct ieee80211_csa_settings csa = {};
2776         int err;
2777
2778         switch (sdata->vif.type) {
2779         case NL80211_IFTYPE_AP:
2780                 sdata->u.ap.next_beacon =
2781                         cfg80211_beacon_dup(&params->beacon_after);
2782                 if (!sdata->u.ap.next_beacon)
2783                         return -ENOMEM;
2784
2785                 /*
2786                  * With a count of 0, we don't have to wait for any
2787                  * TBTT before switching, so complete the CSA
2788                  * immediately.  In theory, with a count == 1 we
2789                  * should delay the switch until just before the next
2790                  * TBTT, but that would complicate things so we switch
2791                  * immediately too.  If we would delay the switch
2792                  * until the next TBTT, we would have to set the probe
2793                  * response here.
2794                  *
2795                  * TODO: A channel switch with count <= 1 without
2796                  * sending a CSA action frame is kind of useless,
2797                  * because the clients won't know we're changing
2798                  * channels.  The action frame must be implemented
2799                  * either here or in the userspace.
2800                  */
2801                 if (params->count <= 1)
2802                         break;
2803
2804                 if ((params->n_counter_offsets_beacon >
2805                      IEEE80211_MAX_CSA_COUNTERS_NUM) ||
2806                     (params->n_counter_offsets_presp >
2807                      IEEE80211_MAX_CSA_COUNTERS_NUM))
2808                         return -EINVAL;
2809
2810                 csa.counter_offsets_beacon = params->counter_offsets_beacon;
2811                 csa.counter_offsets_presp = params->counter_offsets_presp;
2812                 csa.n_counter_offsets_beacon = params->n_counter_offsets_beacon;
2813                 csa.n_counter_offsets_presp = params->n_counter_offsets_presp;
2814                 csa.count = params->count;
2815
2816                 err = ieee80211_assign_beacon(sdata, &params->beacon_csa, &csa);
2817                 if (err < 0) {
2818                         kfree(sdata->u.ap.next_beacon);
2819                         return err;
2820                 }
2821                 *changed |= err;
2822
2823                 break;
2824         case NL80211_IFTYPE_ADHOC:
2825                 if (!sdata->vif.bss_conf.ibss_joined)
2826                         return -EINVAL;
2827
2828                 if (params->chandef.width != sdata->u.ibss.chandef.width)
2829                         return -EINVAL;
2830
2831                 switch (params->chandef.width) {
2832                 case NL80211_CHAN_WIDTH_40:
2833                         if (cfg80211_get_chandef_type(&params->chandef) !=
2834                             cfg80211_get_chandef_type(&sdata->u.ibss.chandef))
2835                                 return -EINVAL;
2836                 case NL80211_CHAN_WIDTH_5:
2837                 case NL80211_CHAN_WIDTH_10:
2838                 case NL80211_CHAN_WIDTH_20_NOHT:
2839                 case NL80211_CHAN_WIDTH_20:
2840                         break;
2841                 default:
2842                         return -EINVAL;
2843                 }
2844
2845                 /* changes into another band are not supported */
2846                 if (sdata->u.ibss.chandef.chan->band !=
2847                     params->chandef.chan->band)
2848                         return -EINVAL;
2849
2850                 /* see comments in the NL80211_IFTYPE_AP block */
2851                 if (params->count > 1) {
2852                         err = ieee80211_ibss_csa_beacon(sdata, params);
2853                         if (err < 0)
2854                                 return err;
2855                         *changed |= err;
2856                 }
2857
2858                 ieee80211_send_action_csa(sdata, params);
2859
2860                 break;
2861 #ifdef CONFIG_MAC80211_MESH
2862         case NL80211_IFTYPE_MESH_POINT: {
2863                 struct ieee80211_if_mesh *ifmsh = &sdata->u.mesh;
2864
2865                 if (params->chandef.width != sdata->vif.bss_conf.chandef.width)
2866                         return -EINVAL;
2867
2868                 /* changes into another band are not supported */
2869                 if (sdata->vif.bss_conf.chandef.chan->band !=
2870                     params->chandef.chan->band)
2871                         return -EINVAL;
2872
2873                 if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_NONE) {
2874                         ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_INIT;
2875                         if (!ifmsh->pre_value)
2876                                 ifmsh->pre_value = 1;
2877                         else
2878                                 ifmsh->pre_value++;
2879                 }
2880
2881                 /* see comments in the NL80211_IFTYPE_AP block */
2882                 if (params->count > 1) {
2883                         err = ieee80211_mesh_csa_beacon(sdata, params);
2884                         if (err < 0) {
2885                                 ifmsh->csa_role = IEEE80211_MESH_CSA_ROLE_NONE;
2886                                 return err;
2887                         }
2888                         *changed |= err;
2889                 }
2890
2891                 if (ifmsh->csa_role == IEEE80211_MESH_CSA_ROLE_INIT)
2892                         ieee80211_send_action_csa(sdata, params);
2893
2894                 break;
2895                 }
2896 #endif
2897         default:
2898                 return -EOPNOTSUPP;
2899         }
2900
2901         return 0;
2902 }
2903
2904 static int
2905 __ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
2906                            struct cfg80211_csa_settings *params)
2907 {
2908         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
2909         struct ieee80211_local *local = sdata->local;
2910         struct ieee80211_channel_switch ch_switch;
2911         struct ieee80211_chanctx_conf *conf;
2912         struct ieee80211_chanctx *chanctx;
2913         u32 changed = 0;
2914         int err;
2915
2916         sdata_assert_lock(sdata);
2917         lockdep_assert_held(&local->mtx);
2918
2919         if (!list_empty(&local->roc_list) || local->scanning)
2920                 return -EBUSY;
2921
2922         if (sdata->wdev.cac_started)
2923                 return -EBUSY;
2924
2925         if (cfg80211_chandef_identical(&params->chandef,
2926                                        &sdata->vif.bss_conf.chandef))
2927                 return -EINVAL;
2928
2929         /* don't allow another channel switch if one is already active. */
2930         if (sdata->vif.csa_active)
2931                 return -EBUSY;
2932
2933         mutex_lock(&local->chanctx_mtx);
2934         conf = rcu_dereference_protected(sdata->vif.chanctx_conf,
2935                                          lockdep_is_held(&local->chanctx_mtx));
2936         if (!conf) {
2937                 err = -EBUSY;
2938                 goto out;
2939         }
2940
2941         chanctx = container_of(conf, struct ieee80211_chanctx, conf);
2942         if (!chanctx) {
2943                 err = -EBUSY;
2944                 goto out;
2945         }
2946
2947         ch_switch.timestamp = 0;
2948         ch_switch.device_timestamp = 0;
2949         ch_switch.block_tx = params->block_tx;
2950         ch_switch.chandef = params->chandef;
2951         ch_switch.count = params->count;
2952
2953         err = drv_pre_channel_switch(sdata, &ch_switch);
2954         if (err)
2955                 goto out;
2956
2957         err = ieee80211_vif_reserve_chanctx(sdata, &params->chandef,
2958                                             chanctx->mode,
2959                                             params->radar_required);
2960         if (err)
2961                 goto out;
2962
2963         /* if reservation is invalid then this will fail */
2964         err = ieee80211_check_combinations(sdata, NULL, chanctx->mode, 0);
2965         if (err) {
2966                 ieee80211_vif_unreserve_chanctx(sdata);
2967                 goto out;
2968         }
2969
2970         err = ieee80211_set_csa_beacon(sdata, params, &changed);
2971         if (err) {
2972                 ieee80211_vif_unreserve_chanctx(sdata);
2973                 goto out;
2974         }
2975
2976         sdata->csa_chandef = params->chandef;
2977         sdata->csa_block_tx = params->block_tx;
2978         sdata->vif.csa_active = true;
2979
2980         if (sdata->csa_block_tx)
2981                 ieee80211_stop_vif_queues(local, sdata,
2982                                           IEEE80211_QUEUE_STOP_REASON_CSA);
2983
2984         cfg80211_ch_switch_started_notify(sdata->dev, &sdata->csa_chandef,
2985                                           params->count);
2986
2987         if (changed) {
2988                 ieee80211_bss_info_change_notify(sdata, changed);
2989                 drv_channel_switch_beacon(sdata, &params->chandef);
2990         } else {
2991                 /* if the beacon didn't change, we can finalize immediately */
2992                 ieee80211_csa_finalize(sdata);
2993         }
2994
2995 out:
2996         mutex_unlock(&local->chanctx_mtx);
2997         return err;
2998 }
2999
3000 int ieee80211_channel_switch(struct wiphy *wiphy, struct net_device *dev,
3001                              struct cfg80211_csa_settings *params)
3002 {
3003         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3004         struct ieee80211_local *local = sdata->local;
3005         int err;
3006
3007         mutex_lock(&local->mtx);
3008         err = __ieee80211_channel_switch(wiphy, dev, params);
3009         mutex_unlock(&local->mtx);
3010
3011         return err;
3012 }
3013
3014 u64 ieee80211_mgmt_tx_cookie(struct ieee80211_local *local)
3015 {
3016         lockdep_assert_held(&local->mtx);
3017
3018         local->roc_cookie_counter++;
3019
3020         /* wow, you wrapped 64 bits ... more likely a bug */
3021         if (WARN_ON(local->roc_cookie_counter == 0))
3022                 local->roc_cookie_counter++;
3023
3024         return local->roc_cookie_counter;
3025 }
3026
3027 int ieee80211_attach_ack_skb(struct ieee80211_local *local, struct sk_buff *skb,
3028                              u64 *cookie, gfp_t gfp)
3029 {
3030         unsigned long spin_flags;
3031         struct sk_buff *ack_skb;
3032         int id;
3033
3034         ack_skb = skb_copy(skb, gfp);
3035         if (!ack_skb)
3036                 return -ENOMEM;
3037
3038         spin_lock_irqsave(&local->ack_status_lock, spin_flags);
3039         id = idr_alloc(&local->ack_status_frames, ack_skb,
3040                        1, 0x10000, GFP_ATOMIC);
3041         spin_unlock_irqrestore(&local->ack_status_lock, spin_flags);
3042
3043         if (id < 0) {
3044                 kfree_skb(ack_skb);
3045                 return -ENOMEM;
3046         }
3047
3048         IEEE80211_SKB_CB(skb)->ack_frame_id = id;
3049
3050         *cookie = ieee80211_mgmt_tx_cookie(local);
3051         IEEE80211_SKB_CB(ack_skb)->ack.cookie = *cookie;
3052
3053         return 0;
3054 }
3055
3056 static void ieee80211_mgmt_frame_register(struct wiphy *wiphy,
3057                                           struct wireless_dev *wdev,
3058                                           u16 frame_type, bool reg)
3059 {
3060         struct ieee80211_local *local = wiphy_priv(wiphy);
3061         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3062
3063         switch (frame_type) {
3064         case IEEE80211_FTYPE_MGMT | IEEE80211_STYPE_PROBE_REQ:
3065                 if (reg) {
3066                         local->probe_req_reg++;
3067                         sdata->vif.probe_req_reg++;
3068                 } else {
3069                         if (local->probe_req_reg)
3070                                 local->probe_req_reg--;
3071
3072                         if (sdata->vif.probe_req_reg)
3073                                 sdata->vif.probe_req_reg--;
3074                 }
3075
3076                 if (!local->open_count)
3077                         break;
3078
3079                 if (sdata->vif.probe_req_reg == 1)
3080                         drv_config_iface_filter(local, sdata, FIF_PROBE_REQ,
3081                                                 FIF_PROBE_REQ);
3082                 else if (sdata->vif.probe_req_reg == 0)
3083                         drv_config_iface_filter(local, sdata, 0,
3084                                                 FIF_PROBE_REQ);
3085
3086                 ieee80211_configure_filter(local);
3087                 break;
3088         default:
3089                 break;
3090         }
3091 }
3092
3093 static int ieee80211_set_antenna(struct wiphy *wiphy, u32 tx_ant, u32 rx_ant)
3094 {
3095         struct ieee80211_local *local = wiphy_priv(wiphy);
3096
3097         if (local->started)
3098                 return -EOPNOTSUPP;
3099
3100         return drv_set_antenna(local, tx_ant, rx_ant);
3101 }
3102
3103 static int ieee80211_get_antenna(struct wiphy *wiphy, u32 *tx_ant, u32 *rx_ant)
3104 {
3105         struct ieee80211_local *local = wiphy_priv(wiphy);
3106
3107         return drv_get_antenna(local, tx_ant, rx_ant);
3108 }
3109
3110 static int ieee80211_set_rekey_data(struct wiphy *wiphy,
3111                                     struct net_device *dev,
3112                                     struct cfg80211_gtk_rekey_data *data)
3113 {
3114         struct ieee80211_local *local = wiphy_priv(wiphy);
3115         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3116
3117         if (!local->ops->set_rekey_data)
3118                 return -EOPNOTSUPP;
3119
3120         drv_set_rekey_data(local, sdata, data);
3121
3122         return 0;
3123 }
3124
3125 static int ieee80211_probe_client(struct wiphy *wiphy, struct net_device *dev,
3126                                   const u8 *peer, u64 *cookie)
3127 {
3128         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3129         struct ieee80211_local *local = sdata->local;
3130         struct ieee80211_qos_hdr *nullfunc;
3131         struct sk_buff *skb;
3132         int size = sizeof(*nullfunc);
3133         __le16 fc;
3134         bool qos;
3135         struct ieee80211_tx_info *info;
3136         struct sta_info *sta;
3137         struct ieee80211_chanctx_conf *chanctx_conf;
3138         enum nl80211_band band;
3139         int ret;
3140
3141         /* the lock is needed to assign the cookie later */
3142         mutex_lock(&local->mtx);
3143
3144         rcu_read_lock();
3145         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3146         if (WARN_ON(!chanctx_conf)) {
3147                 ret = -EINVAL;
3148                 goto unlock;
3149         }
3150         band = chanctx_conf->def.chan->band;
3151         sta = sta_info_get_bss(sdata, peer);
3152         if (sta) {
3153                 qos = sta->sta.wme;
3154         } else {
3155                 ret = -ENOLINK;
3156                 goto unlock;
3157         }
3158
3159         if (qos) {
3160                 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3161                                  IEEE80211_STYPE_QOS_NULLFUNC |
3162                                  IEEE80211_FCTL_FROMDS);
3163         } else {
3164                 size -= 2;
3165                 fc = cpu_to_le16(IEEE80211_FTYPE_DATA |
3166                                  IEEE80211_STYPE_NULLFUNC |
3167                                  IEEE80211_FCTL_FROMDS);
3168         }
3169
3170         skb = dev_alloc_skb(local->hw.extra_tx_headroom + size);
3171         if (!skb) {
3172                 ret = -ENOMEM;
3173                 goto unlock;
3174         }
3175
3176         skb->dev = dev;
3177
3178         skb_reserve(skb, local->hw.extra_tx_headroom);
3179
3180         nullfunc = (void *) skb_put(skb, size);
3181         nullfunc->frame_control = fc;
3182         nullfunc->duration_id = 0;
3183         memcpy(nullfunc->addr1, sta->sta.addr, ETH_ALEN);
3184         memcpy(nullfunc->addr2, sdata->vif.addr, ETH_ALEN);
3185         memcpy(nullfunc->addr3, sdata->vif.addr, ETH_ALEN);
3186         nullfunc->seq_ctrl = 0;
3187
3188         info = IEEE80211_SKB_CB(skb);
3189
3190         info->flags |= IEEE80211_TX_CTL_REQ_TX_STATUS |
3191                        IEEE80211_TX_INTFL_NL80211_FRAME_TX;
3192         info->band = band;
3193
3194         skb_set_queue_mapping(skb, IEEE80211_AC_VO);
3195         skb->priority = 7;
3196         if (qos)
3197                 nullfunc->qos_ctrl = cpu_to_le16(7);
3198
3199         ret = ieee80211_attach_ack_skb(local, skb, cookie, GFP_ATOMIC);
3200         if (ret) {
3201                 kfree_skb(skb);
3202                 goto unlock;
3203         }
3204
3205         local_bh_disable();
3206         ieee80211_xmit(sdata, sta, skb);
3207         local_bh_enable();
3208
3209         ret = 0;
3210 unlock:
3211         rcu_read_unlock();
3212         mutex_unlock(&local->mtx);
3213
3214         return ret;
3215 }
3216
3217 static int ieee80211_cfg_get_channel(struct wiphy *wiphy,
3218                                      struct wireless_dev *wdev,
3219                                      struct cfg80211_chan_def *chandef)
3220 {
3221         struct ieee80211_sub_if_data *sdata = IEEE80211_WDEV_TO_SUB_IF(wdev);
3222         struct ieee80211_local *local = wiphy_priv(wiphy);
3223         struct ieee80211_chanctx_conf *chanctx_conf;
3224         int ret = -ENODATA;
3225
3226         rcu_read_lock();
3227         chanctx_conf = rcu_dereference(sdata->vif.chanctx_conf);
3228         if (chanctx_conf) {
3229                 *chandef = sdata->vif.bss_conf.chandef;
3230                 ret = 0;
3231         } else if (local->open_count > 0 &&
3232                    local->open_count == local->monitors &&
3233                    sdata->vif.type == NL80211_IFTYPE_MONITOR) {
3234                 if (local->use_chanctx)
3235                         *chandef = local->monitor_chandef;
3236                 else
3237                         *chandef = local->_oper_chandef;
3238                 ret = 0;
3239         }
3240         rcu_read_unlock();
3241
3242         return ret;
3243 }
3244
3245 #ifdef CONFIG_PM
3246 static void ieee80211_set_wakeup(struct wiphy *wiphy, bool enabled)
3247 {
3248         drv_set_wakeup(wiphy_priv(wiphy), enabled);
3249 }
3250 #endif
3251
3252 static int ieee80211_set_qos_map(struct wiphy *wiphy,
3253                                  struct net_device *dev,
3254                                  struct cfg80211_qos_map *qos_map)
3255 {
3256         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3257         struct mac80211_qos_map *new_qos_map, *old_qos_map;
3258
3259         if (qos_map) {
3260                 new_qos_map = kzalloc(sizeof(*new_qos_map), GFP_KERNEL);
3261                 if (!new_qos_map)
3262                         return -ENOMEM;
3263                 memcpy(&new_qos_map->qos_map, qos_map, sizeof(*qos_map));
3264         } else {
3265                 /* A NULL qos_map was passed to disable QoS mapping */
3266                 new_qos_map = NULL;
3267         }
3268
3269         old_qos_map = sdata_dereference(sdata->qos_map, sdata);
3270         rcu_assign_pointer(sdata->qos_map, new_qos_map);
3271         if (old_qos_map)
3272                 kfree_rcu(old_qos_map, rcu_head);
3273
3274         return 0;
3275 }
3276
3277 static int ieee80211_set_ap_chanwidth(struct wiphy *wiphy,
3278                                       struct net_device *dev,
3279                                       struct cfg80211_chan_def *chandef)
3280 {
3281         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3282         int ret;
3283         u32 changed = 0;
3284
3285         ret = ieee80211_vif_change_bandwidth(sdata, chandef, &changed);
3286         if (ret == 0)
3287                 ieee80211_bss_info_change_notify(sdata, changed);
3288
3289         return ret;
3290 }
3291
3292 static int ieee80211_add_tx_ts(struct wiphy *wiphy, struct net_device *dev,
3293                                u8 tsid, const u8 *peer, u8 up,
3294                                u16 admitted_time)
3295 {
3296         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3297         struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3298         int ac = ieee802_1d_to_ac[up];
3299
3300         if (sdata->vif.type != NL80211_IFTYPE_STATION)
3301                 return -EOPNOTSUPP;
3302
3303         if (!(sdata->wmm_acm & BIT(up)))
3304                 return -EINVAL;
3305
3306         if (ifmgd->tx_tspec[ac].admitted_time)
3307                 return -EBUSY;
3308
3309         if (admitted_time) {
3310                 ifmgd->tx_tspec[ac].admitted_time = 32 * admitted_time;
3311                 ifmgd->tx_tspec[ac].tsid = tsid;
3312                 ifmgd->tx_tspec[ac].up = up;
3313         }
3314
3315         return 0;
3316 }
3317
3318 static int ieee80211_del_tx_ts(struct wiphy *wiphy, struct net_device *dev,
3319                                u8 tsid, const u8 *peer)
3320 {
3321         struct ieee80211_sub_if_data *sdata = IEEE80211_DEV_TO_SUB_IF(dev);
3322         struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
3323         struct ieee80211_local *local = wiphy_priv(wiphy);
3324         int ac;
3325
3326         for (ac = 0; ac < IEEE80211_NUM_ACS; ac++) {
3327                 struct ieee80211_sta_tx_tspec *tx_tspec = &ifmgd->tx_tspec[ac];
3328
3329                 /* skip unused entries */
3330                 if (!tx_tspec->admitted_time)
3331                         continue;
3332
3333                 if (tx_tspec->tsid != tsid)
3334                         continue;
3335
3336                 /* due to this new packets will be reassigned to non-ACM ACs */
3337                 tx_tspec->up = -1;
3338
3339                 /* Make sure that all packets have been sent to avoid to
3340                  * restore the QoS params on packets that are still on the
3341                  * queues.
3342                  */
3343                 synchronize_net();
3344                 ieee80211_flush_queues(local, sdata, false);
3345
3346                 /* restore the normal QoS parameters
3347                  * (unconditionally to avoid races)
3348                  */
3349                 tx_tspec->action = TX_TSPEC_ACTION_STOP_DOWNGRADE;
3350                 tx_tspec->downgraded = false;
3351                 ieee80211_sta_handle_tspec_ac_params(sdata);
3352
3353                 /* finally clear all the data */
3354                 memset(tx_tspec, 0, sizeof(*tx_tspec));
3355
3356                 return 0;
3357         }
3358
3359         return -ENOENT;
3360 }
3361
3362 const struct cfg80211_ops mac80211_config_ops = {
3363         .add_virtual_intf = ieee80211_add_iface,
3364         .del_virtual_intf = ieee80211_del_iface,
3365         .change_virtual_intf = ieee80211_change_iface,
3366         .start_p2p_device = ieee80211_start_p2p_device,
3367         .stop_p2p_device = ieee80211_stop_p2p_device,
3368         .add_key = ieee80211_add_key,
3369         .del_key = ieee80211_del_key,
3370         .get_key = ieee80211_get_key,
3371         .set_default_key = ieee80211_config_default_key,
3372         .set_default_mgmt_key = ieee80211_config_default_mgmt_key,
3373         .start_ap = ieee80211_start_ap,
3374         .change_beacon = ieee80211_change_beacon,
3375         .stop_ap = ieee80211_stop_ap,
3376         .add_station = ieee80211_add_station,
3377         .del_station = ieee80211_del_station,
3378         .change_station = ieee80211_change_station,
3379         .get_station = ieee80211_get_station,
3380         .dump_station = ieee80211_dump_station,
3381         .dump_survey = ieee80211_dump_survey,
3382 #ifdef CONFIG_MAC80211_MESH
3383         .add_mpath = ieee80211_add_mpath,
3384         .del_mpath = ieee80211_del_mpath,
3385         .change_mpath = ieee80211_change_mpath,
3386         .get_mpath = ieee80211_get_mpath,
3387         .dump_mpath = ieee80211_dump_mpath,
3388         .get_mpp = ieee80211_get_mpp,
3389         .dump_mpp = ieee80211_dump_mpp,
3390         .update_mesh_config = ieee80211_update_mesh_config,
3391         .get_mesh_config = ieee80211_get_mesh_config,
3392         .join_mesh = ieee80211_join_mesh,
3393         .leave_mesh = ieee80211_leave_mesh,
3394 #endif
3395         .join_ocb = ieee80211_join_ocb,
3396         .leave_ocb = ieee80211_leave_ocb,
3397         .change_bss = ieee80211_change_bss,
3398         .set_txq_params = ieee80211_set_txq_params,
3399         .set_monitor_channel = ieee80211_set_monitor_channel,
3400         .suspend = ieee80211_suspend,
3401         .resume = ieee80211_resume,
3402         .scan = ieee80211_scan,
3403         .abort_scan = ieee80211_abort_scan,
3404         .sched_scan_start = ieee80211_sched_scan_start,
3405         .sched_scan_stop = ieee80211_sched_scan_stop,
3406         .auth = ieee80211_auth,
3407         .assoc = ieee80211_assoc,
3408         .deauth = ieee80211_deauth,
3409         .disassoc = ieee80211_disassoc,
3410         .join_ibss = ieee80211_join_ibss,
3411         .leave_ibss = ieee80211_leave_ibss,
3412         .set_mcast_rate = ieee80211_set_mcast_rate,
3413         .set_wiphy_params = ieee80211_set_wiphy_params,
3414         .set_tx_power = ieee80211_set_tx_power,
3415         .get_tx_power = ieee80211_get_tx_power,
3416         .set_wds_peer = ieee80211_set_wds_peer,
3417         .rfkill_poll = ieee80211_rfkill_poll,
3418         CFG80211_TESTMODE_CMD(ieee80211_testmode_cmd)
3419         CFG80211_TESTMODE_DUMP(ieee80211_testmode_dump)
3420         .set_power_mgmt = ieee80211_set_power_mgmt,
3421         .set_bitrate_mask = ieee80211_set_bitrate_mask,
3422         .remain_on_channel = ieee80211_remain_on_channel,
3423         .cancel_remain_on_channel = ieee80211_cancel_remain_on_channel,
3424         .mgmt_tx = ieee80211_mgmt_tx,
3425         .mgmt_tx_cancel_wait = ieee80211_mgmt_tx_cancel_wait,
3426         .set_cqm_rssi_config = ieee80211_set_cqm_rssi_config,
3427         .mgmt_frame_register = ieee80211_mgmt_frame_register,
3428         .set_antenna = ieee80211_set_antenna,
3429         .get_antenna = ieee80211_get_antenna,
3430         .set_rekey_data = ieee80211_set_rekey_data,
3431         .tdls_oper = ieee80211_tdls_oper,
3432         .tdls_mgmt = ieee80211_tdls_mgmt,
3433         .tdls_channel_switch = ieee80211_tdls_channel_switch,
3434         .tdls_cancel_channel_switch = ieee80211_tdls_cancel_channel_switch,
3435         .probe_client = ieee80211_probe_client,
3436         .set_noack_map = ieee80211_set_noack_map,
3437 #ifdef CONFIG_PM
3438         .set_wakeup = ieee80211_set_wakeup,
3439 #endif
3440         .get_channel = ieee80211_cfg_get_channel,
3441         .start_radar_detection = ieee80211_start_radar_detection,
3442         .channel_switch = ieee80211_channel_switch,
3443         .set_qos_map = ieee80211_set_qos_map,
3444         .set_ap_chanwidth = ieee80211_set_ap_chanwidth,
3445         .add_tx_ts = ieee80211_add_tx_ts,
3446         .del_tx_ts = ieee80211_del_tx_ts,
3447 };